Mathematics Middle School

For ΔABC, the measure in degrees of angles A, B, and C are 60, 55, and x + 20 respectively. What is the value of x?

Answers

Answer 1

Answer:

Step-by-step explanation:

All sides of a triangle equel 180 degrees, so 180-60-55=115. 180-115 is 65. 65-20-45. Hope this works!

Answer 2
Ok x = 45 because 180-60-55-20 = 45

Related Questions

Please answer i will give brainlest Please answer I will give brainlest

Answers

im pretty sure that it’s just c d and e that are true.

Answer:

The answer is C, D, and E

Need Help Please ASAP

Answers

Answer:

first step; subtract 7 from both sides. you are left with -3n=8. step two; divide both sides by 3. it should get you to -n=8. therefore n=-8

Step-by-step explanation:

i hope this helped you! :)

-2.6 or -8/3 would be your answer. You always have to isolate the x! Hope this helps!

A certain bacterium splits itself into 2 identical cells in 1 day. Each of those new cells is capable of splitting itself into 2 identical cells in 1 day. So the first day there are 2 cells, the second day there are 2 x 2 cells, and so on. Write and evaluate an expression using a base and an exponent to represent the number of cells present at the end of the 7th day.

Answers

Answer:

2 with the second power??

Step-by-step explanation:

if you have two with the second power II exponents will multiply it by itself so the number gradually gets larger each time

HELP!!!!!!!!!!!!!! ASAP!

Answers

Answer:

∠ ABC = 87°

Step-by-step explanation:

∠ ABD and ∠ DBE are adjacent angles and are supplementary, sum to 180° , so

2x - 17 + x + 32 = 180 , that is

3x + 15 = 180 ( subtract 15 from both sides )

3x = 165 ( divide both sides by 3 )

x = 55

Then

∠ DBE = x + 32 = 55 + 32 = 87° , thus

∠ ABC = ∠ DBE ( vertical angles  )

∠ ABC = 87°

Question 1 (1 point)
Which of the following is NOT a possible cross section for a cone?

Question 1 options:

oval


point


triangle


circle

Question 2 (1 point)
Which of the following is the cross section of a sphere?

Question 2 options:

circle


triangle


line


rectangle

Answers

Question 1 ans=Point
Question 2 ans=Rectangle

Pools are not selling well at Jay’s Store. So, he decides to put them on clearance for $19.99, plus an extra 20% off. Approximately how much will the small pool cost?

Answers

Answer:

Approximately, the small pool will cost $16

Step-by-step explanation:

A small pool will approximately cost $16

Approximate one of the solutions to the system of equations graphed below?

Answers

Answer:

a

Step-by-step explanation:

sry if im wrong

Answer:

C. (-2.2, 3.5)

Step-by-step explanation:

It's correct, I got it right on my test. :)

I need help with question 12

Answers

Answer:

f(2x) which moves the graph up

Step-by-step explanation:

you must replace b with 2. put it in a graphing calculator to see results clearly

Substitute 2 into b and put it in the calculator and it should show the ans

Astorepays$68foradesk.Thestoremarksupthepriceby20%.Whatistheamountofthemark-up?

Answers

Answer:

$13.60

Step-by-step explanation:

20% of 68 = 13.6

The answer is $13.60

Dylan built the following pattern:

Which table represents the relationship between the pattern number (Input) and the number of squares (Output)?
Input Output
1 2
2 8
3 16
Input Output
1 4
2 8
3 12
Input Output
1 1
2 4
3 9
Input Output
1 2
2 6
3 12

Answers

Answer:

1   2

2  6

3  12

Step-by-step explanation:

pattern number is input

tiles number is output.

pattern number 1 has two tiles (first coordinates are (1,2))

pattern number 2 has 6 tiles (second coordinates are (2,6))

pattern number 3 has 12 tiles (last coordinate is (3,12))

answer:

1  2

2 6

3 12

-2(5x-1)+x=-4(x-3)
PLS DO IT STEP BY STEP!!

Answers

Answer:

-10x+2+x=-4x+12

-9x+2=-4x+12

-9x+4x+2=12

-9x+4x=12-2

-5x=10

x=-2

Step-by-step explanation:

Answer:

x= -2

Step-by-step explanation:

-2(5x-1)+x=-4(x-3)

Now, use distributive property on both sides

-10x+2+x = -4x+12

Simplify

-9x+2= -4x+12

-5x= 10

x=-2

Note: By the way, there are already calculators online that show complete steps for algebraic problems like these (if you didn't know). One example being- https://www.symbolab.com/

Don't use it for cheating tho :P

Steve flipped a coin 10 times and recorded his results in this chart

Answers

Heads up: 6
Tails up: 4

Part b.
6/10 of the flips were heads up and 4/10 of the flips were tails up.


Hope it helps : )
6/10 or 60% was heads and 4/10 or 40% was tails

who ever gets this first will get a brainlest

Answers

So this would be 23/100 or you can do 23%

What is the measurement of S and T

Answers

for t:
90-79= 11°
for s:
180-(90+19)= 71°
The answer to your questions is T is 11°and S is 71°

Mary Beth wants to buy grass seed to cover her whole lawn, except for the pool. The pool is 4 5/6 m by 2 1/3 m. Find the area the grass seed needs to cover

Answers

Answer:

If you calculate the area you must multiply both sides.

The answer may be the following:

Exact Form: [tex]\frac{203}{18}[/tex]

Decimal form: 11.27...

Mixed number form: [tex]11\frac{5}{18}[/tex]

5 Solve for x. 8 = 2x + 4​

Answers

Answer:

8 = 2x + 4collect like terms8 - 4 = 2x4 = 2xdivide both sides by 24/2 = 2x/2X = 2

Answer:

x=2 (answer should have a positive sign.)

Step-by-step explanation:

To solve this problem, you have to isolate the x from one side of the equation.

First, switch sides.

8=2x+4

2x+4=8

Subtract by 4 from both sides.

2x+4-4=8-4

Solve.

8-4=4

2x=4

Then, divide by 2 from both sides.

2x/2=4/2

Solve.

4/2=2

x=2

The solution is 2.

The graph shows the weight and fuel efficiency, in miles per gallon, for a selection of vehicles.

Which is the best estimate of the correlation coefficient of the line of best fit?
A. -0.91
B. -0.23
C. 0.68
D. 0.89

Answers

Answer:

a

Step-by-step explanation:

A should be the answer sorry if wrong

If 12 cookies cost $3, how much would I pay for 5 cookies? Set up a proportion and solve.
$1.00

B.
$1.25

C.
$1.50

D.
$1.75

Answers

Answer:

B) 1.25

Step-by-step explanation:

$3/12 cookies = $.25/cookie

.25 * 5 = 1.25

The answer is b. And the working is In the pic below...

Can someone help rq pls it done by tmrw

Answers

Answer:

8 : 20 and 24 : 60

Step-by-step explanation:

Given the ratio

[tex]\frac{2}{5}[/tex]

To obtain a ratio with 20 on the denominator multiply numerator and denominator by 4

= [tex]\frac{2(4)}{5(4)}[/tex] = [tex]\frac{8}{20}[/tex]

To obtain a ratio with 24 on the numerator multiply numerator and denominator by 12

= [tex]\frac{2(12)}{5(12)}[/tex] = [tex]\frac{24}{60}[/tex]

A temperature of C degrees Celsius is the same as 5/9
C+32 degrees Fahrenheit. According to weather records, the highest recorded temperature in the state of New Mexico is 50 degrees Celsius.

Answers

1+1 = 2 second first of all and second of all and then first and then one +2 equals five and 8-2 equals line
I’m not sure what the question is.

PLEASE HELP ME!! question below

Answers

Answer:

625??

Step-by-step explanation:

Answer:

If you used π, 157.079632679 yards or 157.08 yards rounded to the hundredths place. If you used 3.14, the answer is 157 yards.

Step-by-step explanation:

The formula to find the perimeter of a circle is P=2×π×r.

Step 1: Find the radius. In this case, the radius is 25 yards as shown in the diagram.

Step 2: Since the formula only includes multiplication, you can multiply any of the factors. For simplicity, multiply your radius by 2 first. In this case, 2×25=50.

Step 3: Multiply your last number with π. In this case, 50×π=157.079632679 or 157.08 rounded the hundredths place. 50×3.14=157.

Step 4: You found the answer! Hope this helps.

this is the picture for the previous question i asked

Answers

Answer:

See below

Step-by-step explanation:

Well, we know the scale is 1 1/2 inches to 4 feet and that one side length of the scaled drawing sqaure is 3 inches, so . . .

3/1 1/2 (3 divided by one and one-half)

to get: 2

Then multiply it by the scale factor of 4

2*4= 8

But remeber, this is only ONE side of the garden, so multiply this by 4

8*4=32  

Next we want to see the number of links it takes to build the garden

Since one link measures 2 2/3 feet you have to divide

32/ 2 2/3 (32 divided by two and two-thirds)

to get an answer of : 12 links

It isn’t loading for me

(´･ω･`) PLS HELP IS DUE AT 11:59 IT'S EASY ​

Answers

Gufuftd hoghas was the best

THIS LOOKS IMPOSSIBLE

Answers

Answer:

Dang hes smart as heck bro it is 80 Sq cm He deserves brainliest

Step-by-step explanation:

How do you determine which variable is independent
and which one is independent?

Answers

Answer: An independent variable is exactly what it sounds like. It is a variable that stands alone and isn't changed by the other variables you are trying to measure. For example, someone's age might be an independent variable.

Find the area of the figure. Round your answer to the nearest hundredth, if necessary.
ASAP

Answers

area = 1/2pi•r^2
1/2pi•9^2= 127.23 cm^2

I NEED HELLLLLLLPPPPPPP? SHOW WORK PLSSSSSS IF WORK IS NOT SHOWN I WILL REPORT YOU! SO WATCH OUT!

Answers

Answer is D
(1.5,3)

Explanation:

Substitute

1) 3-2(1.5)=0

So 0=0

2) 3=8(1.5)-9

So 3=3

(CORRECT ANSWER GETS BRAINLIEST!!! 20 POINTS!!!)
What is the quotient of the division below?

2599 divided by 9
288.7
288.ModifyingAbove 7 with bar
288.8
288.ModifyingAbove 8 with bar

Answers

Last answer. 288. Modifying above 8 with bar

Answer:

I think it is B.

Step-by-step explanation:

Tell me who is right when you get this, me? Or the other person?

no explanation no brainliest

Answers

Answer: this is a right rectangular pyramid so the volume formula is [tex]\frac{lwh}{3}[/tex] with l= lenght, w= width, h= Height.

So 10 x10 x9 = 900

900/3 = 300 cubic meters

Step-by-step explanation:

What is a brainliest can i have one

PLEASE HELP ME AND I’ll GIVE BT WITH 20 points <3

Answers

Answer: C=πd

Step-by-step explanation:

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