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3 years ago

What is a way to find what 7 is what percent of 20 and I can't use a percent bar model?

Mathematics

1 answer:

Viefleur [7K]3 years ago

6 0

Answer:

you can cross multiply or u can 7/20 to get the answer that 7 is 35% of 20

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Find the value of x in the equation below 4=x/5

victus00 [196]

Answer:

x = 9. Rearrange variables to the left side of the equation: - x = - 5 - 4

Calculate the sum or difference: x=9

Step-by-step explanation:

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1 year ago

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Rearrange f=3g+2 to make g the subject

Helen [10]

Minus 2 from bothsides
f-2=3g
divide both sides by 3
(f-2)/3=g
g=(f-2)/3

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3 years ago

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Consider the following equation. 9x2 − y2 = 6 (a) Find y' by implicit differentiation. y' = (b) Solve the equation explicitly fo

qaws [65]

Answer:

Step-by-step explanation:

Given is an equation in x and y as

$9x^2 - y^2 = 6$

We use implicit method to differentiate the above equation

18x-2yy'=0

y' = 9x/y

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We separate the variables as

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Take square root

$y=\sqrt{9x^2+2C} \\y=-\sqrt{9x^2+2C}$

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3 years ago

WRITE THE TERM,FILL IN THE BLANK

lianna [129]

The answer you’re looking for is: simplify.

When you rewrite an expression, we are simplifying it. We first use the distributive property through any groupings symbols, then evaluate terms we exponent that are given. Lastly, we combine any like terms, weather they are constants or variables.

Hope this helps! :)

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3 years ago

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A triangular pyramid and its net are shown. Rain uses Calculations below to conclude that the surface area of a triangular pyram

Harman [31]

Answer:

Rain is correct, calculates correctly, 238.5 square inches

Step-by-step explanation:

The given triangular pyramid is shown with the dimensions.

The surface area of the triangular pyramid is given by :

$A=\frac{1}{2}\left(a \times b\right) + 3\left(\frac{1}{2}\times b\times s\right)$

$A=\frac{1}{2}\left(10 \times 8.7\right) + 3\left(\frac{1}{2}\times 10\times 13\right)$

$A=43.5+(3\times 65)$

$A=43.5+195$

$A=238.5 \ \text{inche}^2$

Therefore, the surface area of the triangular pyramid is = 238.5 square inches.

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3 years ago