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2 years ago

Please answer 63 points for the answer

Mathematics

1 answer:

professor190 [17]2 years ago

7 0

For number 1 the like terms are 3a and 2a.

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Use the basic probability principle to solve the following problem. Express each probability as a fraction reduced to lowest ter

irinina [24]

Answer:

$\dfrac{11}{12}$

Step-by-step explanation:

If a 12-Sided die is rolled. The set of equally-likely outcomes is:

{1,2,3,4,5,6,7,8,9,10,11,12}

$\text{The probability of rolling a 10}=\dfrac{1}{12}$

Therefore, the probability of rolling any number except 10 is:

$\text{The probability of rolling a number except 10}\\=1-\text{The probability of rolling a 10}\\=1-\dfrac{1}{12}\\=\dfrac{11}{12}$

6 0

2 years ago

4. Find the lateral area and surface area of the given prism.

scoundrel [369]

Answer:

Step-by-step explanation:

$\bold{Q4}\\\text{We have}\\\text{two right triangles with legs a = 4m and b = 7m}\\\text{three rectangles}\ 7m\ \times 38m,\ 8.06m\ \times\ 38m\ \text{and}\ 4m\ \times\ 38m\\\\\text{The formula of an area of a right triangle:}\\\\A=\dfrac{ab}{2}\\\\\text{substitute:}\\\\A_1=\dfrac{(4)(7)}{2}=\dfrac{28}{2}=14\ m^2\\\\\text{The formula of an area of a rectangle}\ l\ \times w:\\\\A=lw\\\\\text{substitute:}\\\\A_2=(7)(38)=266\ m^2\\A_3=(8.06)(38)=306.28\ m^2\\A_4=(4)(38)=152\ m^2\\\\\text{The Surface Area:}$

$S.A.=2A_1+A_2+A_3+A_4\\\\S.A.=2(14)+266+306.28+152=752.28\ m^2$

$\bold{Q11}\\(look\ at\ the\ picture)\\\\\text{The formula of a volume of a pyramid:}\\\\V=\dfrac{1}{3}BH\\\\B-\text{area of a base}\\H-\text{height}\\\\\text{In the base we have the square. The formula of an area of a square with side a:}\\\\A=a^2\\\\\text{We have}\ a=12ft.\ \text{Substitute:}\\\\B=12^2=144\ ft^2\\\\\text{For}\ H\ \text{we need use the Pythagorean theorem:}\\\\H^2+6^2=10^2\\\\H^2+36=100\qquad\text{subtract 36 from both sides}\\\\H^2=64\to H=\sqrt{64}\\\\H=8\ m$

$\text{Substitute:}\\\\V=\dfrac{1}{3}(144)(8)=(48)(8)=384\ ft^3$

5 0

2 years ago

A store is selling t-shirts $40 per shirt.None of the buyers are willing to pay this price.In 2 or 3 sentences, describe the sig

Bas_tet [7]

The buyers are telling the seller that $40 per t-shirt is way too much. There are multiple stores I can name that will sell you a t-shirt for five dollars, so it just looks like a bad deal. The buyers are saying that the price needs to go down.

5 0

2 years ago

Match each of the English phrases with the correct math translation.

Ratling [72]

Answer:

um.......but where is Math translation ?

5 0

2 years ago

Read 2 more answers

The dollar amount (d) that erin earns varies directly as the number of hours (t) that she works. if she earns $206.25 in 25 hour

Liono4ka [1.6K]

D=t*m
d=dollar amount
t=hours
m=how much she earns per hour

Plug in the first set of numbers
$206.25=(25hr)*m
the amount she earns per hour is
$206.25/25hr = m = $8.25 per hr

So

$264=t*$8.25
264/8.25 = t
t = 32 hr

7 0

3 years ago