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3 years ago

SOMEBODY PLEASE HELP ME WITH THIS ASAP, WILL GIVE BRAINLIEST

Mathematics

1 answer:

vekshin13 years ago

5 0

Answer:

a- 130, 130, and 50

b- 7 and 10

I hope this helps! :)

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What is the solution to this system of equations? On a coordinate plane, 2 lines intersect at (negative 6, negative 2). What is

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Answer: The answer is (-6,-2)

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A scale model of a street sign is in the shape of a triangle. The base is 4.25 cm and the height is 8.8 cm what is the area of t

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Answer:

18.7 cm²

Step-by-step explanation:

To work out the area of a triangle you have to use the formula

$\frac{1}{2} * B * H$

Where "B" is the base and "H" is the height

Since these are decimals, I like to convert them into fractions which makes them easier to calculate with

The base is 4.25 cm which will turn into $4\frac{1}{4}$

The height is 8.8 cm which will turn into $8\frac{8}{10}$

Now we use the formula

$\frac{1}{2} * B * H$

$\frac{1}{2} * 4\frac{1}{4} *8\frac{8}{10}$

→ Convert to improper fractions

$\frac{1}{2} * \frac{17}{4} *\frac{88}{10}$

→ Simplify

$\frac{187}{10}$

→ Convert into decimal

18.7

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3 years ago

Ben wants to get a 94 in math class. His grade will be the average of two test scores. He scored an 89 on the first test. What g

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Answer:

Ben needs to get a 99% on his second test

Step-by-step explanation:

The average is the sum of both test scores, divided by the total number of test scores (2).

Let x by the grade Ben must receive on his second test.

(89 + x)/2 = 94

Multiply by 2 on both sides

89 + x = 188

Subtract 89 on both sides

x = 99

Check work:

(89 + 99)/2 = 188/2 = 99

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Estimate the perimeter of the figure to the nearest whole number.

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Answer:

<u>The perimeter of the pentagon ≅ 19 units (approximately)</u>

Step-by-step explanation:

Clockwise, starting from the base of the pentagon, we have:

Base of the pentagon or bottom side ≅ 4 units
2nd side ≅ 3.75 units
3rd side ≅ 3.75 units
4th side ≅ 3.75 units
5th side ≅ 3.75 units

In consequence,

Perimeter of the pentagon ≅ 4 + 3.75 + 3.75 + 3.75 + 3.75

<u>Perimeter of the pentagon ≅ 19 units</u>

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What is 4,400/17,600 as a percentage

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Answer:

25%

Step-by-step explanation:

To change a fraction to a percentage multiply the fraction by 100%, thus

$\frac{4400}{17600}$ × 100%

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3 years ago