All categories

3 years ago

Find the equation of the line with slope =8 and passing through (3,21) write your equation in the form y=Mx+b

Mathematics

1 answer:

stiks02 [169]3 years ago

4 0

Answer: y = 8x -3

Step-by-step explanation:

we know the slope already which is 8.

so the equation is: y = 8x + b

subsutite the x and y to get the value of b

21 = 8(3) + b

21 = 24 + b

b = -3

So the equation is: y = 8x -3

You might be interested in

Julli [10]

Answer:

x = 2

Step-by-step explanation:

AB/BC = AD/DE

$\frac{2}{1}$ = $\frac{2+x}{2}$

cross-multiply:

2+x = 4

x = 2

7 0

3 years ago

Please If you can see if you can help on some of my questions!!!!

kvv77 [185]

PQ // BC

then

Angle P = Angle B, A is common angle the two triangles are similar

AP/AB = AQ/AC

8/18 = 12/ AC

AC = 12 * 18/8 = 27 (your ans: D)

AQ + QC = AC

QC = AC - AQ = 27 - 12 = 15 (if it was required)

tan60 = y/8

y = s tan60 = 8sqrt(3) (B)

Next time, post each question separately.

6 0

2 years ago

How many times does 22 go into 160

lara [203]

The answer is 7 remainder 2.

5 0

3 years ago

Read 2 more answers

In preparing a certain ointment, a pharmacist used 28.35 g of zinc oxide instead of the 31.1 g called for. Calculate the percent

Vilka [71]

Answer: 9.70%

Step-by-step explanation:

The formula to find the percentage error is given by :-

$\%\text{ error}=\dfrac{|\text{Estimate-Actual}|}{\text{Actual}}\times100$

Given : Actual mass of zinc oxide used by pharmacist = 28.35 g

Estimated mass of zinc oxide used by pharmacist =31.1 g

Now, $\%\text{ error}=\dfrac{|31.1-28.35|}{28.35}\times100$

i.e. $\%\text{ error}=\dfrac{2.75}{28.35}\times100$

i.e. $\%\text{ error}=9.70017636684\approx9.70\%$

Hence, the percentage of error on the basis of the desired quantity.= 9.70%

5 0

3 years ago

688×29=<br>how to do this step by stwp

laila [671]

688

x 29

6192

1376 x

19952

So you start by taking 9 from 29 and multiplying it by 688. when you get the answer put it below the line. then multiply the 2 from the 29 and whne you get the answer put a zero on the end and then add the answer you got from 9x688 (6192) and 2x688 (13760) and then thats youre answer. hope it helps!

8 0

3 years ago