2 years ago

I need help with 7-10 please!

1 answer:

6 0

7:
3/8 = 6/x
3x = 48
x = 16

8:
4/5 = (x+7)/40
160 = 5x + 35
5x = 125
x = 25

9:
3/8 = 12/(x-3)
3x - 9 = 96
3x = 105
x = 35

10:
4/1 = (3x+6)/x
4x = 3x + 6
x = 6

You might be interested in

Find Y When x=2 y=5x-9

nadya68 [22]

5*2-9 = y

10-9= 1
y=1

6 0

3 years ago

Read 2 more answers

A machine salesperson earns a base salary of $40,000 plus a commission of $300 for every machine he sells. Write an equation tha

elixir [45]

Answer:

40,000+300×

Step-by-step explanation:

300× × + the 40,000

8 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

Find the value of x round to the nearest tenth

wolverine [178]

Answer:

sin 76 = 13/x

x=13/sin 76

x=13.3979771816

x=13.4

6 0

3 years ago

Can someone help me with this 4 - 3m > -5

ella [17]

Answer: M < -3

.................................................

Step-by-step explanation:

4 - 3m > -5

4 - 3m > (-4 -5)

3m > -9

(3/3)m > (-9/3)

m<-3

4 0

3 years ago