All categories

3 years ago

Pls pls help! super desperate. find the lateral surface areas of the shapes shown in the photo

Mathematics

1 answer:

Alja [10]3 years ago

3 0

Answer:

3- 0.14 2- 841

Step-by-step explanation:

3- 0.7*0.2=0.14

2- 56/2= 28

28*28+29*29= 841*841

square root of 841*841= 841

You might be interested in

Basic triangle proofs

Papessa [141]

Answer:

please mark me as brainlist

7 0

2 years ago

Julie sent 200 emails last month. This month she sent 40% less. How many

NeX [460]

Answer:

She sent 120 emails this month.

Step-by-step explanation:

Multiply 200 by .60 (60 percent) and it will give you 120.

I used 60 instead of 40 because the problem said 40 percent less, NOT 40 percent of 200.

8 0

2 years ago

Mary rode her bike for 2 2/5 miles on Wednesday. On Thursday, she biked 1 1/4 times as far as on Wednesday. How many miles did M

snow_lady [41]

2 2/5=12/5
1 1/4=5/4
12*5=60
5*4=20
60/20=3
So the answer is 3 miles

8 0

3 years ago

Solve the system of equations -3x+7y=-18 and 4x-4y=8 by combining the equations.

Aleksandr-060686 [28]

Answer:

$\huge \colorbox{red}{(x,y)=(-1,-3)}$

Step-by-step explanation:

multiply first equation by 4 and second by 3 respectively:

$\begin{cases} \displaystyle - 12x + 28y = - 72 \\ \: \: \displaystyle \: 12x - 12y = 24 \end{cases}$

combine the equations:

$\underline{ \begin{cases} \displaystyle - 12x + 28y = - 72 \\ \: \: \displaystyle \: 12x - 12y = 24 \end{cases}} \\ \displaystyle16y = - 48$

divide both sides by -48:

$\displaystyle \: \frac{16y}{16} = \frac{ - 48}{16} \\ y = - 3$

substitute the value of y to the second equation

$\displaystyle \: 4x - 4. - 3 = 8$

simplify multiplication:

$\displaystyle \: 4x + 12 = 8$

cancel 12 from both sides:

$\displaystyle \: 4x = - 4$

divide both sides by 4

$\displaystyle \: \frac{4x}{4} = \frac{ - 4}{4} \\ x = - 1$

therefore our solution is

$\displaystyle (x,y)=(-1,-3)$

4 0

3 years ago

Read 2 more answers

Lucy and her mother made tacos they put 2 tacos on each of 7 plates selet the number sentences that show all the tacos Lucy and

slamgirl [31]

2 times 7 = 14
since each of the 7 guests received 2 tacos

3 0

3 years ago