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ehidna [41]
3 years ago
15

An expression using a base and an exponent what is the word for this definition thank you

Mathematics
1 answer:
Lera25 [3.4K]3 years ago
4 0
What are you trying to find im confused!
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Which of the following are solutions to the quadratic equation below? x^2+7x-8=0
Lunna [17]

Answer:

x=1, −8

Step-by-step explanation:

Use the quadratic formula to find the solutions.

(−b±√b²−4(ac))/2a

Substitute the values a=1 , b=7, and c=−8 into the quadratic formula and solve for x.

(−7±√7²−4⋅(1⋅−8))/2⋅1

Simplify. x=(−7±9)/2

The final answer is the combination of both solutions. x=1,−8

5 0
3 years ago
I have 100 points<br> i need some help!!
allsm [11]

Answer:

Option D:  \displaystyle\mathsf{-\frac{4}{5}\:\leq\:x}

Step-by-step explanation:

GIven the following inequality statement:

\displaystyle\mathsf{7x\:+\:6\:\geq \:\frac{-x}{2}}

Start by eliminating the fraction on the right-hand side.

Multiply both sides of the inequality statement by 2:

\displaystyle\mathsf{2(7x\:+\:6)\:\geq \:\bigg[\frac{-x}{2}\bigg](2)}

2(7x + 6) ≥ -x

Next, distribute 2 into the terms inside the parenthesis:

14x + 12 ≥ -x

Subtract 12 from both sides:

14x + 12 - 12 ≥ -x - 12

14x  ≥ -x - 12

Add x to both sides:

14x + x  ≥ -x + x - 12

15x ≥ - 12

Divide both sides by 15 to isolate x:

\displaystyle\mathsf{\frac{15x}{15}\:=\:\frac{-12}{15}}

\displaystyle\mathsf{x\geq -\frac{4}{5}} or  \displaystyle\mathsf{-\frac{4}{5}\:\leq\:x}

Therefore, the correct answer is <u>Option D</u>:  \displaystyle\mathsf{-\frac{4}{5}\:\leq\:x}

8 0
2 years ago
A researcher posts a newspaper advertisement offering $10 in exchange for participation in a short study. The researcher accepts
jonny [76]

Answer:

I think these two are right.

it is a valid sample because money is offered to participants.

it is a valid sample because the first 10 people were selected to participate.

8 0
3 years ago
What is the mean for the data set? (11, 10, 9, 12, 10). A-9 B-12 C-11 D- 10.4
Sladkaya [172]

Answer:

10.4

Step-by-step explanation:

If you add all of these up and divide by 5 you get 10.4 which is the average value.

8 0
3 years ago
Read 2 more answers
If y = -5 when x = 2, find y when x = 8.
nasty-shy [4]

Answer:

Y= -20

Step-by-step explanation:

if y=-5 when x=2 find y when x=8

8 /2 = 4

=> x = 2 * 4 => x = 8 Answer

y = -5 * 4 =>

y= -20

4 0
2 years ago
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