helpppp !

preston can paint 375 square feet in 3 hours . at the same rate how long would it take him to paint 812.5 square feet ?

a ; 0.15 hours
b ; 1.4 hours
c ; 7.5 hours
d ; 6.5 hours

Answer:

C. 2(6)-2x=3

Step-by-step explanation:

You distribute the 2 to the 6 and then to the negative x

Answer:

Step-by-step explanation:

What is the least common denominator of 1/3 and 1 2?

The denominator of the largest piece that covers both fractions is the least common denominator (LCD) of the two fractions. So, the least common denominator of 12 and 13 is 6 .

Answer:

v = 21

Step-by-step explanation:

the sum of the interior angles of a triangle is 180 degrees

add all 3 angle measures and set equal to 180:  

4v + 2v + 54 = 180

6v = 126

v = 21

Answer:

no

Step-by-step explanation:

3:7 *4=12:28

3:7*3=9:21

They both can not equal 12:21

Yes, the given ratios 3:7 and 12:21 are in proportion.

Proportion, in general, is referred to as a part, share, or number considered in comparative relation to a whole. Proportion definition says that when two ratios are equivalent, they are in proportion. It is an equation or statement used to depict that two ratios or fractions are equal.

The given ratios are 3:7 and 12:21.

Here, the proportion is 3:7::12:21

The ratios to in proportions, product of means must be equal to product of extremes.

3×21=7×12

3×7=7×3

21=21

Yes, the given ratios are in proportion.

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Answer:

5.25x-6

Step-by-step explanation:

Answer:  48

=================================================

Explanation:

The keyword "of" means multiply

150% converts to the decimal form 1.5; you move the decimal point two spots to the left to go from percent form to decimal form

Putting those two facts together lead to...

150% of 32 = 1.5*32 = 48

----------------

Another approach:

x% = x/100

150% = 150/100 = 1.5

150% of 32 = 1.5*32 = 48

The last step is identical as before, but the conversion of 150% is slightly different this time.

------------------

Yet another approach:

100% of anything is itself

So 100% of 32 is 32

The extra 50% means we take half of 32 to get 16. Then we add that onto the 32 to get 16+32 = 48

Answer:

d

Step-by-step explanation:

Answer:

x = 2/5 or 0.4

Step-by-step explanation:

3x - 6 = 4(2 - 3x) - 8x

distribute

3x - 6 = 4*2 - 4*3x - 8

3x - 6 = 8 - 12x - 8

combine like terms

3x - 6 = -12x

add 12x to both sides of the equation

3x - 6 + 12x = -12x + 12x

3x - 6 + 12x = 0

15x - 6 = 0

add 6 to both sides of the equation

15x - 6 + 6 = 0 + 6

15x = 6

divide both sides of the equation by 15

15x/15 = 6/15

x = 6/15

x = 2/5

x = 0.4

Answer: 5+7=12

2- 90 + 8 -1 = -81

Step-by-step explanation:

Answer:

14 X 73 = 1022

1022/100 X 120 = 1226.4

1226.40 - 1200 = 26.40

No Sam does not have enough she is 26.40 short.

Answer:

i think its a but im not sure and i dont know how to explain it

Step-by-step explanation:

since we have the relation (inches/dollars)

4.3 inches down per dollar

per 10 dollars 43 inches down

per half a dollar 2.15 inches down

per 63.60 dollars 273.48 inches down

Answer:

i belive it is 19

Step-by-step explanation:

i hope this helps

Answer:

4/6 is the answer due to the way it is set up within the fraction

Answer:

I would say A because 6:3 can only equal 1/3.

Step-by-step explanation:

It would help if you formatted a bit better though. As the choices are not clear. ^^

The probability of getting numbers whose sum is a multiple of three is,

⇒ 1 / 3

Since, The term probability refers to the likelihood of an event occurring. Probability means possibility. It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.

Here, We have;

There are 48 possible outcomes in this situation, and of those outcomes, the ones whose sums are a multiple of three are;

12, 21, 15, 51, 24, 42, 33, 18, 27, 36, 63, 45, 54, 48, 57, and 66.

So, that is 16 out of 48 possibilities,

⇒ 16/48,

⇒ 1/3.

Thus, The probability of getting numbers whose sum is a multiple of three is,

⇒ 1 / 3

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Responder:

$ 11,137

Explicación paso a paso:

Como no se nos dice qué encontrar, también podemos encontrar el beneficio obtenido por la venta de 351 unidades de radio.

Dado

Función de costo C (x) = 43x + 1850

Función de ingresos R (x) = 80x

Obtener la función de ganancias

P (x) = R (x) - C (x)

P (x) = 80x - (43x + 1850)

P (x) = 80x - 43x - 1850

P (x) = 37x - 1850

Si se fabrican 351 radios, la ganancia obtenida se calculará como se muestra a continuación:

P (351) = 37 (351) - 1850

P (351) = 12,987-1850

P (351) = 11,137

Por lo tanto, la ganancia obtenida de las ventas de 351 radios es de $ 11,137

Answer:

5^7

Step-by-step explanation:

Answer:

It is 5^7

Step-by-step explanation:

Hope this helped have an amazing day/month/year!

Answer:

Also doubles

Step-by-step explanation:

Hope this helps. Have a nice day you amazing bean child.

The constant of proportionality is 2.

The general equation of a straight line is -

[y] = [m]x + [c]

where -

[m] → is slope of line which tells the unit rate of change of [y] with respect to [x].

[c] → is the y - intercept i.e. the point where the graph cuts the [y] axis.

We have [y] varies directly with [x] and y doubles then x.

The general equation of a straight line can also be used to represent proportional relationship when [c] = 0.

y = mx + c

y = mx + 0

y = mx

m = y/x

where [m] is constant of proportionality.

A/C to question -

y = 2x

Here, the constant of proportionality is 2.

Therefore, the constant of proportionality is 2.

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Answer:

1)6x

2)4

3)6x+4=2(3x+2)

Step-by-step explanation:

Answer:

-14+(-8/9)=  -14.8

Answer:

-3

Step-by-step explanation:

dont know its right id(kkkkkkkkkkkkkkkkkkkkkkk

Answer:

-2(x)>30

An inequality is a relation which makes a non-equal comparison between two numbers or other mathematical expressions. 

x<-15

Step-by-step explanation:

-2(x)>30 means to divide -2 on both sides which is -15.

x>-15

Next you switch the inequality because you multiplied by a negative:

x<-15

Answer:

x is adding 2 and y is subtracting 4    

+2/-4

Step-by-step explanation:

i looked at the graph.

2x=-4y

Every X value goes up 2 while every Y value declines 4.

Answer: The length of the other diagonal is 8 cm.

Step-by-step explanation:

Area of rhombus = [tex]\frac{pq}{2}[/tex]

[tex]\frac{4q}{2} =16\\[/tex]

[tex]4q = 32\\q = 8\\[/tex]

The length of the other diagonal is 8 cm.

Answer:

What percentage would the wand need to have exactly a 50% chance of winning the wizard standoff?

a;50

Answer:

50

Step-by-step explanation:

Since 140° is on the outside, the angle next to it would be 40°.

Also a triangle = 180°

40° + 90° = 130°

180° - 130° = 50°

Thus meaning x = 50°

Answer:

x = 50°

Step-by-step explanation:

- the angle at the top is shown as a right angle so it is 90°

-the 140° angle and the angle next to it are 180° together so let's name the other angle z

z+140=180

z=180-140=40°

- a triangle's angles in total have 180°

x+y+z= 180°

x+90°+40°=180°

x+130 =180

x= 180-130 = 50°

Answer: 5(4+7x) = 20 + 28x

Step-by-step explanation: Multiply each of the terms in the parentheses by 5.