2 years ago

What is 13(y+7)=3(y−1)

Mathematics

1 answer:

artcher [175]2 years ago

3 0

Answer: Y= -47/5

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

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A car traveled for 6 hours on one highway and for 2 hours on a second highway. If the total distance traveled was 488 miles, and

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6V + 2(V+12) = 488
8V = 464
V = 58 mph for 6 hours

V+12=70 mph for 2 hours.

check: 58*6 = 348

70*2 = 140

348 +140 =488

the car was traveling at 70 mph on the 2nd highway

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2 years ago

6/7k=6 i really need help

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c. picking a red marble.

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Answer:

Option A. $10\ units^{2}$

Step-by-step explanation:

we know that

The area of the rectangle is equal to

A=LW

where

L is the length of rectangle

W is the width of rectangle

we have

$A(-3,1),B(-2,-1),C(2,1),D(1,3)$

Plot the vertices

see the attached figure

L=AD=BC

W=AB=DC

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

<em>Find the distance AD</em>

$A(-3,1),D(1,3)$

substitute in the formula

$AD=\sqrt{(3-1)^{2}+(1+3)^{2}}$

$AD=\sqrt{(2)^{2}+(4)^{2}}$

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$AD=2\sqrt{5}\ units$

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$A(-3,1),B(-2,-1)$

substitute in the formula

$AB=\sqrt{(-1-1)^{2}+(-2+3)^{2}}$

$AB=\sqrt{(-2)^{2}+(1)^{2}}$

$AB=\sqrt{5}$

$AB=\sqrt{5}\ units$

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2 years ago

What property of equality is used when combining like terms in an equation?

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The correct answer is C. Commutative Property

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