Answer:
2 hours 24 minutes
Step-by-step explanation:
Formula
distsance/speed = time
The floor of the entryway to an office building will be triangular. Two angles of the triangle will measure 40°, and the side between them will have a length of 8 meters. Make a scale drawing of the entryway using a scale of 1 cm : 2 m. Explain how you made your drawing.
Answer: The drawing in the attached figure
Step-by-step explanation: we know that
An isosceles triangle, has two equal sides and two equal interior angles
In this problem, the floor of the entryway to an office building is in the shape of an isosceles triangle
step 1
Find the measure of the vertex angle
Remember that
The sum of the interior angles in any triangle must be equal to 180 degrees
so
Let
x ---> the measure of the vertex angle of triangle
step 2
Find the length of the congruent sides of triangle
Applying the law of sines
Let
c ----> the length of one congruent side
we have
substitute
solve for b
step 2
Make a scale drawing of the entryway
The scale drawing is 1 cm : 2 cm
That means
1 cm in the drawing represent 2 cm in the actual
or
1 cm in the drawing represent 0.02 m in the actual
Find the dimensions in the drawing
For a=8 m
For b=5.22 m
step 3
Draw the triangle
step by step thanks you
The answer is a and b.
Here's the way to check:
Since all the numbers follow a constant sequence, it is possible to use division. Minus the first term, then divide it by the pattern of the sequence.
For a, 512 - 8 = 504
The pattern from a is each number is increased by 7. So,
504 ÷ 7 = 72
The number itself you count is not important. The point is that the number could be divided fully without remainder. This means 512 will appear in the sequence.
Repeat the above steps for b and c:
512 - 23 = 489
489 ÷ 3 = 163
It can be divided without remainder, 512 appears in this sequence.
512 - 12 = 500
500 ÷ 12 = 41.66666
Since C is a decimal ( there is remainder ), the number 512 does NOT appear in the sequence.
However, if you want to know the logic of WHY this works, I won't be able to give you a satisfying answer. Hope this helps you.
a linear function contains the following points.
what are the slope and y-intercept of this function?
Answer:
B
Step-by-step explanation:
the slope is -3
1.Scale Factor : 4
Enlargement or Reduction? →
G(4, -4) -------------------------------→ G’
H(-6, 8) -------------------------------→ H’
J(4, 6)----------------------------------→ J’
K(-8, -12) ------------------------------→K’
Which ordered pair could be added to the relation below to ensure it continues to be a function?
Answer:
I think that the answer would be (-7,-1) but i'm not that sure
Step-by-step explanation:
x+4=10;x=
I literally dont get it please help
Answer:
x = 6
Step-by-step explanation:
10 - 4 = 6
The x means the number is unkown, well, we know that 6+4=10, so there you go!
Answer:
6
Step-by-step explanation:
x is a mystery number. We don't know what it is, but we know that if you add 4 to it, we get 10. To what number should we add 4 to get 10?
That's right, 6.
A more advanced explanation:
We need to isolate x, so it will be alone on one side of the equation. To do this, we must subtract 4 from the left side of the equation, so it will be x + 0, or x. But we also need to remember that equations always need to be balanced, so we need to subtract 4 from both sides, to get x + 0 = 10 - 4. Simplifying, we get that x = 6.
Hope this helps!
The diagonal of a TV is 42 inches. The base is 38 inches wide. How tall is the Tv? Round your answer to the nearest tenth. Put your answer in the box. EX: 10
Answer:20.6 inches
Step-by-step explanation:
The diagonal measure of a rectangular TV screen is 42 inches. The width of the screen is 36.6 inches.
The diagonal , width and height forms a right angle triangle
So we apply pythagorean theorem
Diagonal is the hypotenuse
LEt the height of the screen is 'h'
c^2= a^2 + b^2
42^2= 36.6^2 + h^2
Subtract 36.6^2 from both sides
h^2 = 424.44
Take square root on both sides
h=20.60194
Round to nearest tenth
Height of the screen = 20.6 inches
Answer:
1,600 inches
Step-by-step explanation:
You need to take the height of the tv and the base of the tv. So you need to take 42x38= 1,596. Now you need to round to the nearest tenth. So take 1,596 and the nearest tenth would be 1,600. Because 1,596 is closer to 1,596 then 1,590.
The distance from Earth to the moon is 384,400 kilometers. What is this distance expressed in scientific notation?
3.844E5 kilometers
3.844 x 105 kilometers
3.844E-5 kilometers
3.844E-6 kilometers
3.844 x 106 kilometers
.
3.844E6 kilometers
3.844 x 10-6 kilometers
3.844 x 10-5 kilometers
ya
Answer:
B and E
Step-by-step explanation:
Gina visited the aquarium with some of her cousins, aunts, and uncles. The group bought 20 admission tickets for $340. Adult tickets cost $20, and children’s tickets cost $15. How many adult tickets and how many children tickets did the group buy?
Write a system of equations.
Answer:
Look at the attachment
Step-by-step explanation:
There are 12 children tickets did the group buy.
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
The group bought 20 admission tickets for $340.
And, Adult tickets cost $20, and children’s tickets cost $15.
Let number of children = x
And, Number of adult = y
Hence, We get;
The system of equations are,
x + y = 20
y = 20 - x .. (i)
And, 15x + 20y = 340
3x + 4y = 68 .. (ii)
Substitute the value of y from (i) in (ii);
3x + 4(20 - x) = 68
3x + 80 - 4x = 68
80 - 68 = x
x = 12
Thus, There are 12 children tickets did the group buy.
Learn more about the mathematical expression visit:
brainly.com/question/1859113
#SPJ3
PLZ HELP!!! ILL MARK THE FIRST ONE BRAINLIST
Answer:
Longitudinal Wave
Step-by-step explanation:
I really don't know how to explain this, it's just the answer.
will someone plz give me brainliest :(
Answer:
What do you need help with?
Answer:no
Step-by-step explanation:U have to earn it lol
BEST ANSWER GET BRAIN LIEST a thanks 5 star review AND 10 points
A doctor replaces the fish tank in her office. Do the fish have more room to swim in the new tank? Find the volume of each tank to find out.
The volume of the old fish tank, in cubic feet:
Please help!!! Give me answer and i give you brainliest!!
Answer:
b, d, e, f
Step-by-step explanation:
Answer:
B,C, E, F
Step-by-step explanation:
B : 5+3 x 4. first you do 3 x 4 which is 12 the + 5 which equals 17
C: I-6+4I first you do -6 + 4 which equals -2 but it is absolute power so it is 2
E: 2 x 2 x 2 x 2 x 2 is 32
F: 12 divded by 4 is 3, so then 3 x 3 is 9
help i’ll give brainliest lolz
I need help with this
Answer:
<A = <D, <C = <F
Step-by-step explanation:
hi i need help with this question. btw please explain
Answer:
A: -5, -3 B:2, 0 C:4, 1
Step-by-step explanation:
I think you have to see where the dot is placed on the number placement I'm not completely sure but that's my guess
What is the area of the composite figure?
Answer:
i think a
Step-by-step explanation:
Answer: I think the answer is A Not sure
Step-by-step explanation:
Can you please help me?
Graph the following equations on the coordinate plane.
Answer:
this is the graph for y= -3x+8
Step-by-step explanation:
Please help, giving 25 points!!!!!!!!
1/3x+y=15
Which of the following are ordered pairs of the equation above?
A. {(16, -3),(15, 0),(14, 3)}
B. {(-3, 14),(0, 15),(3, 16)}
C. {(-3, 16),(0, 15),(3, 14)
Answer:
B
Step-by-step explanation:
Three salesmen work for the same company, selling the same product. And, although they are all paid on a weekly basis, each salesman earns his paycheck differently.
Salesman A works strictly on commission. He earns $65 per sale, with a maximum weekly commission of $1,300.
Salesman B earns a weekly base salary of $300, plus a commission of $40 per sale. There are no limits on the amount of commission he can earn.
Salesman C does not earn any commission. His weekly salary is $900.
The weekly paycheck amount for each salesman, p, is a function of the number of sales, s, they had in that week.
Salesman A Salesman B Salesman C
s = 0 (0,
) (0,
) (0,
)
s = 1 (1,
) (1,
) (1,
)
s 10 (10,
) (10,
) (10,
)
Answer:
12 sales
Step-by-step explanation:
Let x represent the number of sales each man had.
For Salesman A, he earns $65 per sale; this is 65x.
For Salesman B, he earns $40 per sale; this is 40x. We also add to this his weekly salary of $300; this gives us 40x+300.
Since their pay was equal, set the two expressions equal:
65x = 40x+300
Subtract 40x from each side:
65x-40x = 40x+300-40x
25x = 300
Divide both sides by 25:
25x/25 = 300/25
x = 12
Two Florida panthers were weighed. One weighs 6x + 21 pounds and the two together weigh 14x + 11 pounds. How much does the other panther weigh alone?
plz plz help i beg i will givebrianlist
Answer:
36.86
Step-by-step explanation:
Answer:
i cant answer this because it doesnt really make any sense but some guy said 36.86 or something like that
i hope hes right
Step-by-step explanation:
ANSWER THESE EASY QUESTIONS WILL GIVE BRAINLY
Answer:
i dont know im only doing it for the points
Step-by-step explanation:
At the end of the evening, there are just enough ingredients to make 4 pancakes. How many cups of flour will be used in this batch?
(Flour is 1 1/2)
Answer:
6 I'm pretty sure.
Step-by-step explanation:
tell me if I'm wrong, sorry if I am
what is the answer in the picture below i need help
UGH! RSM!!!!!!!!!!!!!!!!!!!!! John's family visited his grandmother over the weekend. The drive to her house took 2 hours at their usual speed. the trip home took 15 minutes longer because traffic was bad and they had to drive 5 mph slower. How many miles away is john's grandmother's house? will give BRAINLIEST! +10pts!
Answer:
90 miles!
Step-by-step explanation:
there are two parts to the problem, meaning you'll need 2 equations.
let's call the distance TO the grandma's house d1, and BACK from the grandma's house d2.
KEY:
time TO g'ma house= t1
time FROM g'ma house=t2
(replace the t's with 's' for speed, with the '1' for to, and '2' for from)
(distance is a constant so d1 is always equal to d2).
-------------
d1=s1+t1, d2=s2+t2
we know what t1 is. 2 hours.
d1=s1•2
meaning that d2 is also equal to that.
s1•2=(s1-5)•2 1/4
2s1=2 1/4 s1-11 1/4
11 1/4= 2 1/4 s1-2s1
11 1/4 = 1/4 s1
s1 (to g'ma)=45 mph
distance is speed times time.
so 45•2 (hr) = 90.
Steve made $ 125 mowing lawns. He gave 60% of his earnings to his mother. How much did Steve give to his mother?
(if you answer this may you please show your work)
Answer:
$75
Step-by-step explanation:
60% is also 0.6. Multiply 0.6 x 125 to get 75. You multiply because they're asking 60% (0.6) of (x) his earnings (125).
Hope it helps!
PLS HELP ASAP 30 POINTS
BRAINLIEST INCLUDED! The cost of a pair of boots was $40. They now cost $25. Determine the percent of decrease. Enter your response with an explanation of your process.
Answer:
37.5 percent
Step-by-step explanation:
First, work out the difference (decrease) between the two numbers you are comparing(which is 15 in this case) . Next, divide the decrease by the original number and multiply the answer by 100.(15/40=0.375 times 100=37.5) If the answer is a negative number, this is a percentage increase
Pls help with the question in the picture
I don't understand what to do in this
Answer:
A i think. lol i hope its A
Answer:
A
Step-by-step explanation:
it's a because it's an acute triangle with 3 given angles which creates more than one triangle