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3 years ago

Solve a system of equations using substitution –2x + 5y = 14 x = 8

Mathematics

1 answer:

gregori [183]3 years ago

7 0

Step-by-step explanation:

Putting value of x

-2(8) + 5y = 14

-16 + 5y = 14

5y = 14 + 16

5y = 30

y = 30 /5 = 6

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Please help me I don't understand on how to put these numbers on the number line

mojhsa [17]

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Step-by-step explanation:

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3 years ago

The cost to rent a truck is a $75 flat fee. plus $0.55 per mile driven.

pentagon [3]

Answer:

a) y = 0.55x + 75

b) $108

Step-by-step explanation:

a) to find the equation represent the sequence use the y=mx+b formula

y = total price

m = cost per mile

x = miles driven

b = flat fee

Therefore y = 0.55x+75

b) To figure out the cost of driving 60 miles you use the equation y = 0.55x + 75

y = 0.55 X 60 + 75

= 108

Therefore the cost of renting the truck and driving 60 miles is $108

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2 years ago

7. Nam and Brandon each have a cylindrical canister of Pringles. Nam's cylinder has a diameter of 7

Naddik [55]

Yes I think sours I think that’s ok

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3 years ago

Read 2 more answers

A cylinder soup has a radius of 1,6 in and is 5/7 in. tall what is the volume

nata0808 [166]

Answer:

$V=0.0623\ inch^3$

Step-by-step explanation:

Given that,

The radius of cylinder, r = 1/6 inch

The height of the cylinder, h = 5/7 inch

We need to find the volume of the cylinder. The formula for the volume of a cylinder is given by :

$V=\pi r^2 h\\\\=3.14\times (\dfrac{1}{6})^2\times \dfrac{5}{7}\\\\V=0.0623\ inch^3$

So, the volume of the cylinder is equal to $0.0623\ inch^3$ .

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3 years ago

Find the value of the angle θ rounded to 1 DP.

kogti [31]

Answer:

Step-by-step explanation:

Sin 21 = $\frac{opposite side}{hypotenuse}$

Sin 21 = $\frac{BC}{15}$

0.3583 = $\frac{BC}{15}$

0.3583*15 = BC

BC = 5.3745 = 5.37 m

Tan ∅ = $\frac{opposite side}{adjacent side}$

Tan ∅ = $\frac{4}{5.37}= 0.7448$

∅ = tan⁻¹ (0.7448) = 36.67 = 36.7

5 0

2 years ago