Susan estimated she would spend $250 on school clothes at the start of the school year. She actually ended up spending only $230. What was her percent of error in her calculations?
Answer:
8.7%
Step-by-step explanation:
the formula for % error is = [ (approx. - exact ) / exact ] x 100
so, we know the approx value was 250 while the exact one is 230
thus; [ ( 250-230 ) / 230 ] x 100
= 8.7%
Which pictures below show pure substances?
Tim washed 15 cars in 3hours.how many cars can he wash In 7 hours?
Answer:
35 cars
Step-by-step explanation: ok so here is how you do it you divide 15 and 3 to find out how much cars Tim washed in one hour so in this case we got 5 then we multiply the hours by 7 and we get 35 cars
Answer:
I believe the answer is 35.
Step-by-step explanation:
15+15=30
30+5=45
1 hour = 5 cars
3 hours = 15 cars
6 hours = 30 cars
7 hours = 35 cars
15 divided by 3 = 1
so yeah hope this helps you.
Bruce drewa scale of a resturaunt the scale he used was 1 milimeter 10 meters the resteraunt kitchen is 3 milimeters long in the drawing how long is the actual kitchen
Answer: 30 meters.
Step-by-step explanation:
Since the scale used by Bruce in the drawing that she made is:
1 milimeter = 10 meters
If the restaurant kitchen is 3 milimeters long in the drawing, the length of the actual kitchen will then be:
1/3 = 10/x
Cross multiply
1 × x = 3 × 10
x = 30
Therefore, the actual length is 30 meters.
A rectangular prism has a length of 4 inches, a height of 5 inches, and a width of 19 inches. What is its volume, in cubic inches?
Answer:
380 cubic inches
Step-by-step explanation:
The basic formula is length x width x height, so it's pretty simple, you just do 4 x 19 x 5! The order doesn't matter as long as it's just the length worth and height
I, sometimes do length x width, then use the answer for that and multiply it by the height (So that I can break it down)
Confused!? Pls, help me correctly and quickly.
Answer:
The new figure would be 9 by 15
Step-by-step explanation:
Oi lend a hand here? Math isn't my thing :P
x is less than or equal to 5, really simple
Answer:
C
Step-by-step explanation:
The volume of a cylinder is 8T cubic centimeters. The
radius and the height are equal. What is radius of the
cylinder? Explain how you know.
The sum of -9 and 18/2
Answer:
0
Step-by-step explanation:
Sum means addition so:
-9 + 18/2
(18/2 = 9)
-9 + 9
0
Answer: 0
Step-by-step explanation: The answer I got was 0. I'm assuming that 18/2 is 18 divided by 2. 18 divided by 2 is 9 and if you add a positive and a negative its like subtracting. 9-9=0 so the answer is 0.
Write the number 0.000037 in scientific notation
Answer:
3.7 x 10^-5
Step-by-step explanation:
Which two of the following have the same value as 50.96?
Choose 2 answers:
Answer:
A and C
Step-by-step explanation:
A: 5 tens = 50
9 tenths = 0.9
6 hundreths = 0.06
= 50.96
C: 5*10 = 50 + 9 * 1/10 = 0.9 + 6 * 1/100 = 50.96
SOMEONE PLEASEEEE HELPPPP?!!?!?!?!!?!?!??!
HELP PLEASE I DONT KNOW WHAT TO DO
Answer:
5, -10, 10
Step-by-step explanation:
a “step“ can’t be negative so we can say that we move twice to left 5 spaces
a positive number multiplied by a negative number gives as result a negative number. In this case -10
the opposite of a number is the same number in absolute value with a opposite sign. In this case 10
A circle with a radius equal to 12 feet.
Answer:
What do you mean a radius equal to 12 feet? What is your question?
Step-by-step explanation:
Write the equation of each circle. center at (-4, 3), radius 9
Answer:
(x-h)²+(y-k)²=r²
putting respective value
(x--4)²+(y-3)²=9²
(x+4)²+(y-3)²=81
Answer:
(x + 4)^2 + (y - 3)^2 = 9^2
Step-by-step explanation:
Here our center is at (-4, 3), so h = -4 and k = 3. Radius, r, is 9.
Insert these values into the standard equation of a circle centered at (h, k) with radius r:
(x - h)^2 + (y - k)^2 = r^2 becomes:
(x + 4)^2 + (y - 3)^2 = 9^2
Find the area of the parallelogram. base is 10 and height is 8
Answer:
80
Step-by-step explanation:
8*10
A recipe requires 1/2 cup of sugar for every batch of cakes. How batches of cakes can be made with 5 1/2 cups of sugar?
Answer:
11
Step-by-step explanation:
5.5/.5 = 11
Help me out here plz
Answer:
I think that it would be [tex]28^{2}[/tex] cm
Step-by-step explanation:
8 x 7 = 56
56/2 = 28
Subtracting fractions with unlike denominators
help me please?
The function ƒ(x) = 2x + 1 indicates:
a downward shift of 1 unit.
a shift of 1 unit to the left
an upward shift of 1 unit.
None of these choices are correct.
what is the product
4/6 x 9
13/16
36/54
3
6
Triangle ABC is taken to triangle ABC by a dilation. Which of these scale factors for the dilation would result in an image that was larger than the original figure?
A)3/5
b)13/17
c)1
D)4/3
Answer:
D
Step-by-step explanation:
you would see this as correct because it has a larger numerator than its denominator.
I NEED HELP!
The function f(x) is a quadratic function and the zeros of f(x) are - 2 and 5. The y-intercept of f(x) is 30. Write the equation of the quadratic polynomial in standard form.
f(x)=___________
Answer:
Step-by-step explanation:
First of all you have to put the zeros into factor form.
y1 = (x + 2)(x - 5)
Notice that the x changes sigh. You say that the zeros are -2 and 5. To get y1 to go to zero, you must make x the opposite sign of what you are given.
Now you have to expand the factored form to get the standard form
y = x^2 + 2x - 5x - 10
y = x^2 - 3x - 10
That's not the right answer.
f(0) = 30 but you have - 10 at the end so you have to multiply the factored form by - 3
-3(f(x)) = -3(x + 2)(x - 5)
-3(f(x)) = -3(x^2 - 3x - 10)
f(x) = -3x^2 + 9x + 30
f(0) = -3(0)^2 + 9(0) + 30
f(0) = 30
The quadratic still has roots of (x +2)(x - 5) but that 3 makes the y intercept = 30.
See the graph below.
What is the area of the trapezoid below?
Answer:
A = 180 units²
Step-by-step explanation:
The area (A) of a trapezoid is calculated as
A = [tex]\frac{1}{2}[/tex] h (b₁ + b₂ )
where h is the perpendicular height and b₁, b₂ the parallel bases
The triangle on the left is right with h = 24 (7- 24- 25 triangle )
Here h = 24, b₁ = 4 and b₂ = 7 + 4 = 11 , then
A = [tex]\frac{1}{2}[/tex] × 24 × (4 + 11) = 12 × 15 = 180 units²
Figure AAA maps to figure BBB with a scale factor of 0.750.750, point, 75.
Answer:
7.5
Step-by-step explanation:
x=10*0.75 = 7.5
note that b is smaller than a
Spider Rock is located in Canyon de Chelly National Park in Arizona. A surveyor stands 370 feet from the base of Spider Rock. From a point 5.5 feet above the ground, he measures the angle of elevation to the top of Spider Rock to be 65°. According to the surveyor's measurements, what is the height of Spider Rock? Round your answer to the nearest tenth. A. 178.0 ft. B. 340.8 ft. C. 413.7 ft. D. 799.0 ft.
Answer:
799 feet
Step-by-step explanation:
We solve using the Trigonometric function of Tangent.
tan theta = Opposite /Adjacent
From the above question, we have the height of the surveyor = 5.5 feet
theta = Angle of elevation = 65°
Adjacent = 370 feet
Let Opposite = height + height of spider rock
tan 65° = h - 5.5 /370 feet
Cross Multiply
tan 65° × 370 feet = h - 5.5
793.46756059 feet = h - 5.5
h = 793.46756059 feet + 5.5
h = 798.96756059 feet
Approximately = 799 feet
The height of the Spider rock = 799 feet
. Find the indicated term of the arithmetic sequence.
Find a_23 in the sequence -18,-34,-50,-66,…
Answer:
Hello . ♡
The answer to your question is : −370 .
Step-by-step explanation:
Hope this helps u ;)
4) x/5 =2
plz explain
How do I do this problem?
Answer: calculate x e it says and it = 6
Step-by-step explanation: hope this helps pls give me brainly
please help me with the question