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3 years ago

Explain how to estimate 368+231 in two ways

Mathematics

2 answers:

VLD [36.1K]3 years ago

8 0

1st way= Round your SUM to the closest. Example: 44 is close to 40 since its not 45 yet.

DiKsa [7]3 years ago

7 0

1st way. 368 is closest to 370
2nd way. 231 is closest to 230
3rd way. Your sum will be 699, Closest to 700.

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Find the value of x <br> (8x-1) (4x+7)

Helen [10]

Answer:

The value of x = 7

Step-by-step explanation:

Given the right triangle

Right angle = 90°

α = (4x+7)°

β = (8x-1)°

We know that the sum of angles of a triangle is 180°.

Right angle + α + β = 180°

90° + 4x+7 + 8x-1 = 180

Group like terms

$4x+8x+90+7-1=180$

Add similar elements: :4x+8x=12x

$12x+90+7-1=180$

$12x+96=180$

$12x=84$

Divide both sides by 12

$\frac{12x}{12}=\frac{84}{12}$

$x = 7$

Therefore, the value of x = 7

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3 years ago

Sara is hiring a babysitter who charges $20 per hour plus a $10 travel fee. What equation represents y, the amount of money the

stellarik [79]

Answer:

20x+10=y

Step-by-step explanation:

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2 years ago

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vekshin1

Answer:

4 would be the answer hopefully

5 0

2 years ago

Read 2 more answers

A six-sided die is rolled twice. What is the probability that the result of both rolls are

Anestetic [448]

Answer:

1/36

Step-by-step explanation:

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2 years ago

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If y = -5 when x = 2, find y when x = 8.

nasty-shy [4]

Answer:

Y= -20

Step-by-step explanation:

if y=-5 when x=2 find y when x=8

8 /2 = 4

=> x = 2 * 4 => x = 8 Answer

y = -5 * 4 =>

y= -20

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1 year ago