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elena-s [515]
2 years ago
9

PLSSSS HELPPPP20 POINTSSS MATHH

Mathematics
2 answers:
melamori03 [73]2 years ago
8 0

Answer:

<u> </u><u> </u><u> </u><u> </u><u> </u><u> </u><u>1</u><u> </u><u> </u><u> </u><u> </u><u> </u><u> </u>

-7x

Step-by-step explanation:

the rule of indices states that any thing raised to power of - 1 is 1 over the number. (e.g: 8^ -1 = 1/8 or 7^ -2 = 1/7²

therefore;

(-7x)‐¹ = <u> </u><u> </u><u> </u><u> </u><u> </u><u>1</u><u> </u><u> </u><u> </u><u> </u>

-7x

please remark brainliest

zhuklara [117]2 years ago
7 0

Answer:

- \frac{1}{7x}

Step-by-step explanation:

using the rule of exponents

(a)^{-1} = \frac{1}{a} , then

(-7x)^{-1} = - \frac{1}{7x}

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If f(x) = 3x^2- 1 and g(x) = 4x + 2, then what is g(f(x))?
katrin2010 [14]

Answer:

g(f(x) = 12x^2-2

Step-by-step explanation:

solution:

given,

f(x)=3x^2-1

g(x)=4x+2

g(f(x)=?

here,

g(f(x) = g(3x^2-1) [put the value of f(x) given]

=4(3x^2-1)+2 [ now put the value of g(x) and in the place of x put 3x^2-1]

=12x^2-4+2 [ by multiplying 4(3x^2-1) ]

= 12x^2-2 ans..

So g(f(x)=12x^2-2

hope its helps , I tried my best to explain there

hope you understand it as i am terrible at explaining like this ...

have a good time(•‿•)

3 0
3 years ago
Can someone just tell me which ones are correct and which ones are wrong?
lozanna [386]
First row all correct second rows all wrong and the first on of third row is correct be the last two are incorrect
6 0
3 years ago
Max was paid $429.50 on April 1st for his paycheck.
Keith_Richards [23]

Answer:

$212.86

Step-by-step explanation:

429.50 - 122 = 307.50

307.50 - 36.75 = 270.75

270.75 - 72.90 = 197.85

197.85 + 20 = 217.85

217.85 - 4.99 = 212.86

3 0
3 years ago
Read 2 more answers
Please help
kvasek [131]

Answer:

14,7

Step-by-step explanation:

Use Pythagorean theorem.

a^2+b^2=c^2

a=√21^2-15^2= √216=14,7

5 0
3 years ago
Read 2 more answers
The height of a building is
eduard

Answer:

10 feet

Step-by-step explanation:

This is a problem of scale

where scale is

actual height of any object/ height of that object on drawing

given

actual height = 24 feet

this is represented 1/2 inch on drawing

thus

scale = actual height/ height on drawing = 24 feet/1/2 inch = 24*2 feet/ 1 inch

scale = 48 feet / 1 inch

given actual  height of a building = 480 feet

let the height on drawing be x inch

thus

48 feet / 1 inch = 480 feet/ x inch

=> x inch/ 1 inch = 480 feet / 48 feet

=> x = 10 feet

Thus,  the  height of  building on the drawing is 10 feet

6 0
3 years ago
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