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otez555 [7]
3 years ago
12

Please help?! I don't understand!

Mathematics
1 answer:
strojnjashka [21]3 years ago
6 0
<span>(Problem Number Five Answer: Simplify exponent so you get -3)
(Problem Number Seven Answer: 
</span>
Step 1: Simplify brackets

4 x^{2}  y^{3} *7xy

Step 2: <span>Gather like terms
</span>  4 * 7 x^{2} x y^{3} y

Step 3: Use Product Rule x^{a}  x^{b= x^{a+b} }<span>

</span>4* 7 x^{2+1}  y^{3+1}
<span>
Step 4: </span>Simplify 2+1 to 3

4*7 x^{3} y^{3+1}

Step 5: Simplify 3 + 1 to 4
4*7 x^{3}  y^{4}

Step 6: <span>Simplify

</span>28 x^{3}  y^{4}
<span>
Done! :)
(Problem Number 9 answer: Simplify the exponent so you get -5 )

</span>
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Nathan hit 19 homeruns. He scored 3 fewer homeruns than twice the number of homeruns hit by jason. Write and solve an equation t
Vinvika [58]

Jason hit 11 homeruns.

Step-by-step explanation:

Homeruns hit by Nathan = 19

Let,

Homeruns hit by Nathan = x

Homerun hit by Jason = y

According to given statement;

x = 2y - 3   Eqn 1

We know that Nathan hit 19 homeruns, therefore, putting x=19 in Eqn 1

19=2y-3\\19+3=2y\\22=2y\\2y=22

Dividing both sides by 2;

\frac{2y}{2}=\frac{22}{2}\\y=11

Jason hit 11 homeruns.

Keywords: linear equations, addition

Learn more about linear equations at:

  • brainly.com/question/3375830
  • brainly.com/question/3398261

#LearnwithBrainly

7 0
3 years ago
Ryan ran 1 3/5 miles everyday for a week. How many miles did he run in all?
zheka24 [161]

Answer:

11 1/5 miles

Step-by-step explanation:

1 3/5 miles multiplied by 7 is 11 1/5

4 0
3 years ago
What is two 2/3÷1 1/6
babunello [35]

Answer:

0.57142857142

Step-by-step explanation:

6 0
3 years ago
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For a certain model of car the distance d required to stop the vehicle if it is traveling at v mi/h is given by the formula d =
enyata [817]
Given that <span>For a certain model of car the distance d required to stop the vehicle if it is traveling at v mi/h is given by the formula d=v+\frac{v^2}{20}, where [tex]d is measured in feet.

If Kerry wants her stopping distance not to exceed 75 ft, then the range of speeds (in mi/h) can she travel is obtained as follows:

v+ \frac{v^2}{20} \leq75 \\  \\ 20v+v^2\leq1,500 \\  \\ v^2+20v+100\leq1,500+100 \\  \\ (v+10)^2\leq1,600 \\  \\ |v+10|\leq\sqrt{1,600} \\  \\ -40\leq v+10\leq40 \\  \\ -40-10\leqv\leq v\leq40-10 \\  \\ -50\leq v\leq30

Therefore, the range of speed she can travel is v\leq30\ mi/hr
</span>
8 0
3 years ago
Kimberly wants to grow grass in her backyard. She is buying grass seed to plant and needs to determine the area of her backyard.
ANTONII [103]

Answer:

B) Foot

Step-by-step explanation:

6 0
3 years ago
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