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4 years ago

K/2 + 9 = 30 What is k

1 answer:

4 0

K/2+9=30 1. Start by getting rid of the number farthest from K
-9 -9      2. The nines cancel out, 30-9=21
K/2 = 21   3. Next, get the 2 away from K
/-2 /-2 4. The 2 cancel out when divided, 21 divided by -2= -10.5
K = -10.5
K=-10.5

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If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

sveta [45]

ANSWER

C. 28

EXPLANATION

The given expression is

${x}^{2} - 7x + 10$

We want to evaluate this function at x=-2.

We just have to substitute x=-2 into the given expression.

In other words, we have to replace x with -2 wherever we see x in the expression

${( - 2)}^{2} - 7( - 2) + 10$

We evaluate the exponent to get

$4 - 7( - 2) + 10$

We multiply next to get:

$4 + 14+ 10$

We now add to obtain:

$28$

The correct answer is C

6 0

3 years ago

11. The table shows the lengths of fish caught by three,

blsea [12.9K]

Numbers can be ordered in ascending or descending order.

The length of fishes from greatest to least is

$Emily = 12 \frac 34$ .
$Emma = 12.7$ .
$Anne = 12 \frac 35$

Given

$Emma = 12.7$

$Anne = 12 \frac 35$

$Emily = 12 \frac 34$

Convert all fractions to decimals

$Emma = 12.7$

$Anne = 12.6$

$Emily = 12.75$

Arrange from greatest to least

$Emily = 12.75$

$Emma = 12.7$

$Anne = 12.6$

Hence, the length of fishes from greatest to least is

$Emily = 12 \frac 34$ $Emma = 12.7$ $Anne = 12 \frac 35$

Read more about order of numbers at:

brainly.com/question/3729546

6 0

3 years ago

Factor completely.

andreyandreev [35.5K]

The answer is A

Hope this helps!!

3 0

4 years ago

A is directly proportional to the cube of B When A=54, B=3 Find A when b=4

vesna_86 [32]

Answer:

a=72

Step-by-step explanation:

54/3=18

18*4=72

a=72 when b=4

5 0

3 years ago

Write an equation that can be used to find the degree measure of angle b Don’t put links !

dedylja [7]

Answer:

Because they are supplementary angles, their sum is 180°.

∠b = 180° - 81°

∠b = 99°

7 0

3 years ago

Read 2 more answers