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scZoUnD [109]
3 years ago
6

Find the x-intercepts of the graph of y=x^2+4x-45

Mathematics
1 answer:
Eva8 [605]3 years ago
4 0

Answer:

(-9, 0) (5, 0)

Step-by-step explanation:

if we set y to 0, then we get:

0 = x^{2} + 4x - 45

Now, we have to find what the x value is to equal 0.

0 = -9^{2} + 4(-9) - 45

0 = 81 - 36 - 45

0 = 45 - 45

0 = 5^{2} + 4(5) - 45

0 = 25 + 20 - 45

0 = 45 - 45

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The main floor of Kinsey's home is 1,425 square feet. The upper level is 875 square feet with one unfinished bedroom that measur
kvv77 [185]

The reportable square footage for Kinsey's home = 2150square feet.

The main floor of Kinsey's home is 1,425 square feet.

The upper level is 875 square feet with one unfinished bedroom that measures 150 square feet.

The finished basement is 1,425 square feet with 7.5-foot ceilings.

That means the square footage of the upper floor plus the main floor (minus the unfinished laundry area).

Kinsey should report square feet (1425+875- 150)

= 2150square feet.

Hence, The reportable square footage for Kinsey's home = 2150square feet.

Learn more about square footage here brainly.com/question/25845997

#SPJ4

3 0
2 years ago
Find all solutions to the following equation. If there are any extraneous solutions, identify them and explain why they are extr
vagabundo [1.1K]

Answer:

b = 3, which is an extraneous solution because if we replace b = 3 in the equation, we must be 5/0 and 30/0, and there is division by 0.

Step-by-step explanation:

\frac{7}{b+3} + \frac{5}{b-3} = \frac{10b}{b^2-9}

The minus common multiply must be (b-3)*(b+3) = b² - 9

\frac{7*(b-3)}{b^2-9} + \frac{5*(b+3)}{b^2 -9}  = \frac{10b}{b^2-9}

7b - 21 + 5b + 15 = 10b

2b = 6

b = 3

Which is an extraneous solution because if we replace b = 3 in the equation, we must be 5/0 and 30/0, and there is division by 0. So this solution is invalid.

7 0
3 years ago
10 POINTS!
aksik [14]

Answer:

C

Step-by-step explanation:

3 0
3 years ago
A recipe for a loaf of bread requires 2/3 cup of flour. How many cups of flour would it take to make 15 loaves of bread?
Mars2501 [29]

Answer:

10

Step-by-step explanation:

1 loaf if bread= 2/3 cup

15 loaves of bread= 2/3 × 15

= 10

5 0
2 years ago
Gloria works at least 10 hours per week but no more than 25 hours each week. She earns 9.00 an hour. Her weekly earnings depend
emmasim [6.3K]

Answer:

[90,225] notation or 135 range

Step-by-step explanation:

10x9=90

25x9=225

[900,2250] notation or 1350 range

7 0
3 years ago
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