Find the value of the expression: 70–a2 for a=–25; 1; 10

Mathematics

1 answer:

nordsb [41]3 years ago

4 0

Tysm!!! :3 Hope it helps

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Twenty motors were put on test under a high-temperature setting. The lifetimes in hours of the motors under these conditions are

natta225 [31]

Answer:

Step-by-step explanation:

The step by step explanation is given in the attached document.

3 0

3 years ago

Simplify the expression:<br><br> ( 1 - ( 9x^2 + 4 ) / 2 ) / ( 1 / 3x - 1 / 2 ) + 1

Yuliya22 [10]

Answer:

First Step

Simplify —

Equation at the end of step

((9•(x2))+4) 1 1

————————————•x))—•x)-—)+1

12 (( 3 2

STEP

Simplify —

Equation at the end of step

((9•(x2))+4) 1 1

————————————•x))—•x)-—)+1

12 (( 3 2

STEP

Calculating the Least Common Multiple

3.1 Find the Least Common Multiple

The left denominator is : 3

The right denominator is : 2

8 0

2 years ago

PLEASE HELP SOLVE I WILL MARK AS BRAINLESS!<br>

AlexFokin [52]

Answer:

See below

Step-by-step explanation:

$13) \: no \: of \: people = 2 \div \frac{1}{8} \\ = 2 \times \frac{8}{1} \\ = 16 \\ \\ 14) \: no \: of \: prizes \: won \: by\:Mallory \\ = \frac{2}{ \cancel3} \times \cancel6 \\ = 2 \times 2 \\ = 4 \\ \\ 15) \: no \: of \: quart \: diced \: tomatoes \\ = 5 \frac{1}{4} \times 1 \frac{2}{3} \\ \\ = \frac{ \cancel{21}}{4} \times \frac{5}{ \cancel3} \\ \\ = \frac{7}{4} \times 5 \\ \\ = \frac{35}{4} \\ \\ = 8 \frac{3}{4} \\ \\ 16) \: no \: of \: blocks = 123 \frac{1}{2} \div 6 \frac{1}{2} \\ \\ = \frac{247}{2} \div \frac{13}{2} \\ \\ = \frac{247}{2} \times \frac{2}{13} \\ \\ \frac{247}{13} \\ \\ = 19$