3 years ago

PLEASE HELP I DONT UNDERSTAND 40 POINTS

Mathematics

1 answer:

fomenos3 years ago

8 0

Answer:

a. reflection over y axis, then reflection over x-axis

b. xy=qh, xz=qj, yz=jh

c.Both triangles are congruent because all of the sides are congruent

Step-by-step explanation:

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Calvin evaluated -2/3 *5 1/6 using the steps below.

matrenka [14]

For this case we have to evaluate the following expression,

$- \frac {2} {3} * 5 \frac {1} {6}$

We must follow the steps below:

We convert the mixed number into a fraction:

$- \frac {2} {3} * \frac {6 * 5 + 1} {6} =\\- \frac {2} {3} * \frac {31} {6} =$

We multiply the fractions, taking into account that:

$- * + = -\\- \frac {2 * 31} {3 * 6} =\\- \frac {62} {18} =$

We simplify:

$- \frac {31} {9}$

We convert to mixed number:

$-3 \frac {4} {9}$

Answer:

$-3 \frac {4} {9}$

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3 years ago

Keisha bought 11 pounds of rice for $5.

Mazyrski [523]

Answer:

$2.20

Step-by-step explanation:

11 pounds of rice for $5.

Divide the $5 by 11.

11 divided by 11 is 1.

So 1 pound of rice is $2.20.

(PS i might be wrong, SO SORRY IF I AM)

5 0

3 years ago

The average of 3 of your quiz grades are 17 points. Two of your quizzes is 14 and 19 points. Write and solve an equation to find

dsp73

(17*3) --- to find the total points of the 3 quizzes
17*3=51
the third quiz grade=51-14-19=18
hope this helps

8 0

3 years ago

Given complex numbers u and v below,what is uv<br><br> u=7i<br> V=6-i

boyakko [2]

Answer:

7 + 42i.

Step-by-step explanation:

u v = 7i(6 - i)

= 42i - 7i^2 But i^2 = -1 so:

= 42i - 7(-1)

= 7 + 42i.

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3 years ago

Ariel collected information about mockingbirds for a science project.

ipn [44]

Answer:

420/30=14 beats per second, meanin 1680 beats is your answer.

Step-by-step explanation:

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3 years ago