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2 years ago

Help on this, please

Mathematics

2 answers:

Nadusha1986 [10]2 years ago

6 0

Cp akosmw’msoswkqowmw’sm2skz
zzzjonxdnej up oompdj8)h9

faust18 [17]2 years ago

3 0

Answer:

C.P Discount S.P

3) $450 80% $90

4) $200 64% $72

Step-by-step explanation:

Please give me brainliest :)

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I dont really understand this??

jeyben [28]

Answer:

$x\geq -53$

Step-by-step explanation:

The inequality includes -53.

The interval notation is $\:[-53,\:\infty \:)$

$\{ x \in \mathbb{R}: x \geq -53 \}$

8 0

3 years ago

Read 2 more answers

∠A and ∠B are complementary angles.

iogann1982 [59]

Cos 52 = 0.6157

sin 42 = cos 48 = 2/3 (because 42 + 38 = 90 - complementary angles)

if tan 20,5 = 3/8 then tan 69.5 wil = 1 / 3/8 = 8/3

3 0

3 years ago

The points , (−15,1) and , (−7,r) lie on a line with slope 5/4. Find the missing coordinate r. Click image to enlarge

Nadya [2.5K]

The missing coordinate r is 11.

Solution:

Given points are (–15, 1) and (–7, r).

$x_{1}=-15, x_{2}=-7, y_{1}=1 \text { and } y_{2}=7$

Slope (m) = $\frac{5}{4}$

<u>To find the missing coordinate r:</u>

Slope formula:

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

Substitute the given values in the formula.

$$\frac{5}{4}=\frac{r-1}{-7-(-15)}$

$$\frac{5}{4}=\frac{r-1}{-7+15}$

$$\frac{5}{4}=\frac{r-1}{8}$

Do cross multiplication.

$8 \times 5=4(r-1)$

40 = 4r – 4

Add 4 on both side of the equation.

44 = 4r

Divide by 4 on both side of the equation.

11 = r

⇒ r = 11

Hence the missing coordinate r is 11.

6 0

3 years ago

Simplify (-5i)+(5-1)+6

Liono4ka [1.6K]

Hi there

-5i + 5-1 + 6

= -5i + 11- 1

= 5i + 10

That's the answer :0

I hope that's help... Do you have any question ?

5 0

3 years ago

Help i need the answer 7x-64=83+14x

dusya [7]

If you're trying to get x your answer would be -21.

3 0

3 years ago