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3 years ago

Circle the problems below that you could use mental math to solve.

Mathematics

2 answers:

ira [324]3 years ago

5 0

Hello!

For this one, all of them look like you can use mental math, but maybe choose the two middle ones and the bottom right one.

Hope this helps :))

VMariaS [17]3 years ago

4 0

Maybe 54-10 because you just take one away from 5

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May i know the answer for this please

Naddik [55]

Answer:

14, 16

Step-by-step explanation:

The prime factorization of 224 is 2⁵ × 7. To make it a perfect square, we need the bases to have an even exponent, therefore we divide it by 2 × 7 = 14 to get 16.

4 0

4 years ago

How do you simplify this problem

vampirchik [111]

Reduce the fraction with 2
$\frac{2 \times x {}^{ - 2} y {}^{3}z {}^{ - 1} }{xy} \\ \\ \frac{3y {}^{2}z {}^{ - 1} }{x {}^{3} } \\ \\ \frac{3y {}^{2} }{x {}^{3} z}$

7 0

3 years ago

Three more than six times a number equals -5. what is the number?

DerKrebs [107]

Answer:

-4/3

Step-by-step explanation:

first we can name this number x

so then our equation would be

3+6x=-5

then subtract 3 from both sides

6x=-8

divide both sides 6

x=-8/6

simplify

x=-4/3

7 0

3 years ago

Read 2 more answers

What does it mean if diagonals are perpendicular?

rodikova [14]

Answer:

they form a 90 degree angle

Step-by-step explanation:

perpendicular (⊥) always implies 90 degree angles

parallel (║) always implies they never intersect

5 0

3 years ago

A yoga studio charges a $120 yearly fee for membership plus $16 for each class.

Stolb23 [73]

Answer:

$17.2

Step-by-step explanation:

120 + 16*100 = 120 + 1600 = 1720

The member pays $1720 annually for 100 classes and membership fee combined.

1720/100 = 17.2

The student pays $17.2 per class on average.

6 0

2 years ago