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balandron [24]
3 years ago
11

Find the missing value for X

Mathematics
1 answer:
castortr0y [4]3 years ago
7 0
If we assume that BC is bisecting AD, and that AE is half of AD, we can set up the equation:

2(19)=5x-7

Then we can solve directly for x:

38=5x-7
45=5x
x=9

So we have then calculated x which is equal to 9.
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Solve x^2 +14x = -24 by completing the square. Which is the solution set of the equation?
Korolek [52]
Start with <span>x^2 +14x = -24,

Find HALF the value of 14:  7
Square this:  49
Add 49, and then subtract 49:        x^2 + 14x + 49 - 49 = -24  We have a
                                                                                             perfect square
Rewrite the quadratic as the sq. of a binomial:                    trinomial on
                                                                                              the left
                                                         (x+7)^2 = 25

Take the sqrt of both sides:  x+7 = plus or minus 5

Then x = -2 and x = -12</span>
3 0
3 years ago
Simplify (−4.5)(−6)(5.4).<br> i need the answer pls
matrenka [14]

Answer:

145.8

Step-by-step explanation:

−4.5 x −6 x 5.4

7 0
2 years ago
Read 2 more answers
a recipe calls for 2/3 of a cup of milk for 12 cookies how many cups of milk are needed to make 180 cookies ​
VashaNatasha [74]

Answer:

10 Cups of Milk

Step-by-step explanation:

2/3  cup of milk --->10 cookies

  x  cup of milk --->150 cookies

x=((2/3)*150)/10=(2/3)*15=10 cups of milk

8 0
3 years ago
Emma and her family are saving for college. The first year will cost $18,500. She received a scholarship for $3,000 and her pare
nata0808 [166]

Answer:

$4,650

Step-by-step explanation:

8 0
3 years ago
36 3⁄4 gallons of water come out of a hose in 15 minutes. Write the ratio in fractional form and determine the water rate in gal
Brrunno [24]

Answer:

Step-by-step explanation:

If 3⁄4 gallons of water come out of a hose in 15 minutes, to calculate the rate of water that comes out in an hour (60 minutes), we will use the expression;

3/4 gallons = 15 minutes

x gallons = 60minutes

cross multiply

15x = 3/4 * 60

15x = 180/4

15x = 45

x = 45/15

x = 3/1

x = 3:1

Hence the water rate in gallons per hour is 3 gallons per hour

7 0
3 years ago
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