Value of the expression. ? 18-2x(4+3)

Answers

Answer 1

Answer: 18 - 2x(4+3) =

combine like terms in the parentheses

18 - 2x(7) =

Multiply

18 - 14x (This is the value of the expression)

We can solve for x by setting it equal to zero

18 - 14x = 0
-14x = -18
x = -18/-14
x = 1 2/7

Answer 2

Answer: The answer to the expression is 4

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Hey can u please help please

Answers

in a triangular prism, B usually stand for the triangular base of the prism. It is the area of the triangle.

Area of a right triangle = ab/2
a = long leg ; b = short leg

Given measures are:
a = 4 yd ; b = 3 yd

A = (4 yd * 3 yd)/2 = 12 yd² / 2 = 6 yd² is the value of B.

the hypotenuse is 5 yd but it is not needed to get the area of the right triangle base. 7 yd is the measure of the height of the triangular prism.

what is B) also.............

Can someone help me answer these?

Answers

10.
If it is rolling a six as in a dice, then it would not be the same probability as getting heads on a coin because the probability of rolling a six on a dice wiuld be a 1/6 probability. Flipping a coin and getting heads would be a 1/2 probability.

11.
Donald can do this because on a standard dice, the probability of rolling one number is 1/6. (If it would be the probability of rolling an even number, it would be 3/6, which simplifies to 1/2, in case you didn't know or weren't sure.)

Hope I helped!!

Mr. Anderson drove 168 miles in 3 hours. He then drove the next 2 hours at a rateof 5 miles an hour faster than the first rate,
How many miles did Mr. Anderson drive during th
hours?

Answers

Answer:

If you were asking how many miles in total: 290 miles.

If you were asking how many miles in the 2 hours: 122 miles

Step-by-step explanation:

In the first 168 miles,

$Since \nv_1=168miles/3h=56 miles/h\n\nThus \nv_2=v_1+5=56+5=61miles/h\n\nX_1=168miles\nX_2=v_2*2h=61*2=122miles\nX_1+X_2=168+122=290miles\n\n$

is there a 9's trick in multiplication? if so please tell me! i would love to know since i am so terrible with my 9.

Answers

There is a nine trick
First, you hold up all of your fingers
So if you're doing 6x9, you would hold up your 10 fingers, and count to six, while each number, hold a finger down. When you're done, you should have the thumb of your right hand down. So since your left hand has 5 fingers down, that's 50. Next, you skip your thumb and count 4. That's 54
6x9 is 54

There is a nines trick Ex. 9 x 8 You put your hands in front of you and would put the eighth finger down. The eight finger is like an imaginary line. The fingers that are up on the left side are the tens. And the fingers up on the right are the ones. Then when you add them together they make the anwser of 72. And it works for any number. I hope i helped

A pitcher of fruit punch holds 2 gallons.If 9 people share the entire pitcher equally, how much punch does each person get?

Answers

Answer:

3.5 cups

Step-by-step explanation: there are 32 cups in two gallons, 32 devided by 9 is 3.5

A cylinder has a surface area of 1850 square meters and a radius of 9 meters. Estimate the volume of the cylinder to the nearest whole number. How????

Answers

in order to find the volume you need the height.

Surface area = π r² + base x height or width x length
1850 = 3.14 × 9² + radius × 2 x π x height
1850 = 254.34 + 9 × 2 × 3.14 × height
1850 = 310.86 × height

To find the height you have to divide the surface area by the part I bolded

Height = 1850 ÷ 310.56
Height ≈ 6

Volume of a cylinder = πr²×height
= 3.14 × 9 × 9 × 6
Volume =1526.04

Nearest whole number would be 1526

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