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maw [93]
3 years ago
13

PLEASE HELP !

Mathematics
1 answer:
Fofino [41]3 years ago
7 0

Answer:

1. Muliplication Property of Equality

2. Simplifying

3. Addition Property of Equality

4. Simplifying

Step-by-step explanation:

First, get x-7 by itself by multiplying 2 on both sides. Simplify both sides to get x-7=-22. Add 7 to both sides to get x by itself to get x=-15.

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Evaluate the expression 3.14(a2 + ab) when a = 3 and b = 4. (Input decimals only, such as 12.71, as the answer.)
raketka [301]

Replace a and b with the given values:

3.14(3^2 + 3x4)

Simplify:

3.14(9 +12)

3.14(21)

Multiply:

3.14 x 21 =65.94

7 0
4 years ago
How do I complete the square?
zhannawk [14.2K]
You have to set them all equal to 0 and then factor it out.
6 0
4 years ago
Find an equation for the perpendicular bisector of the line segment whose endpoints are (5, -9) and (-9, -5).​
GrogVix [38]

Answer:

y = x - 9

Step-by-step explanation:

Find the slope of the first line.

(-9 + 5)/(5 + 9)

-1

Lines perpendicular have opposite reciprocal slopes

1

Find the middle point of the first line, this is where it will intersect with the bisector.

5 + - 9/2 = 2

-5 + -9/2 = -7

(2,-7) is the midpoint

Use Point Slope Form to reduce it to Standard Form

y + 7 = 1(x - 2)

y + 7 = x - 2

y = x - 9

5 0
3 years ago
A scale on a bike path shows that 3 inches represents 5 miles. How many inches on the map are equal to 30 miles
PtichkaEL [24]

Answer:

18 inches.

Step-by-step explanation:

If the ratio for inches to miles is

\frac{3}{5},

then you multiply the top and bottom by 6 to get to 30. This gets the numerator to 18 inches.

8 0
4 years ago
A grocery store has 120 bottles of spring
notka56 [123]

Question:

A grocery store has 120 bottles of spring water in stock.  The store orders bottles of spring water in cases of 24.  The store wants to order enough cases of spring water so it has more than 500 bottles in stock.  Which inequality best models this situation?

A.  24x + 120 > 500

B.  24x - 120 > 500

C.  24x + 500 > 120

D.  24(x+120) > 500

Answer:

Option  A.  24x + 120 > 500  is the inequality that best models this situation.

Step-by-step explanation:

The Number of bottles of spring  water in the stock = 120

Each case of the spring water bottles contains 24 bottles

The store wants  to order enough cases of spring water so  that it has over 500 bottles in stock.

So there are already 120 bottles in stock .

The store will order

24x +120  > 500

where x  is the number of spring water bottle cases

5 0
4 years ago
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