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dybincka [34]
1 year ago
11

Solve by factoring x^2 + 8x =9

Mathematics
1 answer:
Helen [10]1 year ago
6 0

Answer:

x=-9,\:x=1

Step-by-step explanation:

x^2+8x=9\\x^2+8x-9=0\\(x+9)(x-1)=0\\x=-9,\:x=1

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A hiker is climbing down a valley. He stops for a water break 4 times. Between each break, he descends 15 meters. How many meter
Murljashka [212]

The word in the problem that indicates that a negative sign should be used is "descend"

<h3></h3><h3>How many meters did he descend?</h3>

We know that he stops for water breaks four times, and between each water break, he descends 15 meters.

The written equation is:

4*(-15)m = -60m

Why the negative sign is used?

The negative sign is used because the hiker is descending, so its height is decreasing. The word in the problem that indicates that a negative sign should be used is "descend"

If you want to learn more about signs:

brainly.com/question/5870782

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7 0
1 year ago
The Top One please ASAP first one gets brainliest only if you actually answer
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Step-by-step explanation:

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3 hours= 180 minutes

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8 0
2 years ago
What is the surface area of the rectangular prism shown above?
Mariulka [41]

Answer:

A=248

Step-by-step explanation:

l=10

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7 0
3 years ago
lighting if a 25-foot-tall house cast a 75-foot shadow at the same time that a streetlight casts a 60-foot shadow how tall is th
jolli1 [7]

Answer:

The street light is 20 feet tall.

Step-by-step explanation:

This question depends on a proportion. Keep your height of the object in one ratio and the length of the shadow in the other.

25/x = 75/60      Notice the height of the structure is on the left. The length of the shadow is on the right. Cross multiply

75x =  60 * 25     Combine the right

75x = 1500          Divide by 75

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3 0
2 years ago
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Julli [10]

Answer:

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Step-by-step explanation:

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If I order 3 Happy Meals, then I will receive

3(hamburgers +fries + drinks +toys)

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If I don't, then I have broken the distribution property.

5 0
2 years ago
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