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Alenkasestr [34]

3 years ago

15

Evaluate the expression by using the given values of the variables.

1 answer:

zepelin [54]3 years ago

3 0

Order of operations tell us that we do multiplication and division first in the order we get to them, and then addition and subtraction after. 24/4*3-6/3+8. We'll divide 24 by 4 to get 6, but then we immediately have to multiply 6 times 3 to get 18. Then move down to 6 divided by 3 to get 2. So what we have now is 18 - 2 + 8 which is 24.

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Solve for the variable c in this equation a(c + b) = d

noname [10]

Multiply everything in the parenthesis by a.

ac + ab = d

Subtract ab from both sides.

ac = d - ab

Divide a on both sides.

c = d - ab / a

Hope this helps!

3 0

3 years ago

Given log3 2=0.631 log3 7=1.771 what is log3 14?

Leni [432]

In logarithm, inverse operations are applied.
$log_3{14} = log_3{7} + log_3{14} \\ log_3{14} = 0.631 + 1.771 \\log_3{14} = 2.402$

5 0

2 years ago

Read 2 more answers

Subtract -7n +2 from 2n - 1

Irina18 [472]

2n - 1 - -7n + 2 You combine like terms with subtracting
2n - 7n = -5n
-1 - 2 = -3
So -7n + 2 - 2n - 1 = -5n - 3

4 0

2 years ago

Read 2 more answers

5x +7 y=-17<br> 4x – 3y = -5<br> Substitute.

Bond [772]

Answer:

(x,y) = (-2, -1)

Step-by-step explanation:

We start off by substituting the value of "x".

5x+7y=-17

x=- $\frac{5}{4} + \frac{3}{4}y$

We then solve 5 $5(-\frac{5}{4}+\frac{3}{4}y ) +7y= -17$

y=-1 *Substitute the value of "y"

x= - $-\frac{5}{4}+\frac{3}{4}x(-1)$

x=-2

$\left \{ {{-17=-17} \atop {-5=-5}} \right.$ This works.

5 0

3 years ago

What three things must a ordered pair have?

igor_vitrenko [27]

Answer: An x and y value, parenthesis around the values, and a comma in between them.

Examples of ordered pairs: (2, 5), (1872, 1683), (-3, 7), (7/8, -10/2)

3 0

2 years ago