All categories

3 years ago

Help me with this 3 problems 1) -1/6 +(-3/6) 2)8/12-2/12 3)4/7-1/4

Mathematics

1 answer:

STatiana [176]3 years ago

8 0

Work is all listed below:

1) -1/6 - 3/6 = -4/6 = -2/3

2) 8/12 - 2/12 = 6/12 = 1/2

3) 4/7 - 1/4 = 16/28 - 7/28 = 9/28

You might be interested in

The map key shows that a map distance of 1/4 in. represents an actual distance of 5/8 mi. The actual distance from Portland to B

mariarad [96]

8 divided by 5/8= 12.8
12.8 • 1/4 = 3.2
so it would be 3.2in on the map.

3 0

3 years ago

Read 2 more answers

Answer the two questions below. Show ALL of your work.(a) John and Stan were building a sand castle. They decided to make it int

RoseWind [281]

Answer:

a) 84π b) 109.2π

Step-by-step explanation:

The formula to find this is v=πr^2h/3

r=d/2. so the radius (r) is 6 because you have to divide the diameter (12) by 2. and the height is 7. so, 6^2=36 and 36x7=252.

252/3=84

and because the question is asking for the EXACT value, you need to just put the pi symbol next to it. Final answer for a is 84π

B) you need to find 30% of 84, which is 25.2 and add it to 84, and you will get 109.2! Final answer is 109.2π.

5 0

3 years ago

Two angles are supplementary and one of the angles is 8 times the other. find the measure of the larger angle.

postnew [5]

supplementary angles add up to 180 degrees

angle 1 = x

angle 2 = 8x

x +8x = 180

9x = 180

x = 180/9 = 20 degrees

larger angle = 8*20 = 160 degrees

7 0

3 years ago

What is the 101st term for the sequence 13, 9, 5, 1... ?

NeX [460]

Step-by-step explanation:

a=13
d=13-9=4

${:}\longrightarrow$ $\sf S_n={\dfrac {n}{2}}\left [2a-(a-1)d\right]$

${:}\longrightarrow$ $\sf S_101={\dfrac {101}{2}}\left [26 (12)4\right]$

${:}\longrightarrow$ $\sf 50.5×1248$

${:}\longrightarrow$ $\sf S_101=63504$

${:}\longrightarrow$ $\sf a_n=a+(n-1)d$

${:}\longrightarrow$ $\sf a_101=13+(101-1)-4$

${:}\longrightarrow$ $\sf a_101=13+100(-4)$

${:}\longrightarrow$ $\sf 13-400$

${:}\longrightarrow$ $\sf a_101=-387$

8 0

3 years ago

Use benchmark values to estimate 7/10 + 7/8.

allsm [11]

Answer:

1.575

Step-by-step explanation:

4 0

3 years ago