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Marrrta [24]

3 years ago

{x}^{2} } " alt=" - \sqrt{49 {x}^{2} } " align="absmiddle" class="latex-formula">
simplify expression

Mathematics

1 answer:

kaheart [24]3 years ago

5 0

Step-by-step explanation:

Given

$- \sqrt{49 {x}^{2} } \\ = - \sqrt{ {7}^{2} {x}^{2} } \\ = - 7x$

Hope it will help :)

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For f(x) = 3x^2 – X+5, 2f (-3) - f(4)=

Alenkinab [10]

Answer:

3x^2-x+5.2f\left(-3\right)-f\left(4\right) =

3x^2-x-19.6f

Step-by-step explanation:

3x^2-x+5.2f\left(-3\right)-f\left(4\right)

=3x^2-x-5.2f\cdot \:3-f\cdot \:4

=3x^2-x-15.6f-4f

=3x^2-x-19.6f

8 0

3 years ago

Add the numbers from 1 to 100 by following the same steps you used in 1.

oksano4ka [1.4K]

Summaation of a sequence

or see a smaller scale
from 1 to 10
notice
1+10=11
2+9=11
etc
5+6=11
10/2=5
there are 5 pairs
5*11=55

so

1 to 100
1+100=101
2+99=101
...
50+51=101

100/2=50
there ar 50 pairs
50 times 101=5050

the sum is 5050

3 0

3 years ago

Write in index form 12 × 12 × 12 × 12 × 12 × 12 × 12 × 12

iris [78.8K]

Answer:

$\sf{12^{8} }$

Step-by-step explanation:

12 × 12 × 12 × 12 × 12 × 12 × 12 × 12 = $\sf{12^{8} }$

$\sf{12^{8} }$ = 429,981,696

An easy way to think of this is that there are 12 is being multiplied by itselg 8 times (there are 8 12s). Similar to how squared numbers work...

Hope this helps! If you need further explanation, let me know!

- profparis

8 0

2 years ago

Read 2 more answers

If John Ran 1/8 of a mile long he ran around the track 24 times how many miles is that

prohojiy [21]

3 miles, 1/8 time 24.

7 0

3 years ago

Read 2 more answers

HOW DO U COMBINE LIKE TERMS in math?? DO NOT LOOK IT UP :) THX

gayaneshka [121]

Answer:

See below

Step-by-step explanation:

"Like terms" are terms with the same variable or exponents.

You can add or subtract these just like you would with regular numbers.

Examples:

2x + 4x = 6x

5xy + 7xy = 12xy

6 $x^{2}$ + 5 $x^{2}$ = 11 $x^{2}$

Let me know if you need more examples or have any questions :)

6 0

3 years ago