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3 years ago

Find 8x+y when x=2 and y=5.

Mathematics

1 answer:

fgiga [73]3 years ago

7 0

Answer:

Step-by-step explanation:

8x+y, when x=2 and y=5,

then 8*2+5. Because the 2 is right next to the 8, it isn't '82', but '8*2'

According to PEMDAS, multiplication is done first, so

8*2= 16,

16+5, which is 16+5= 21

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Devon and Kylie each makr a cheese sauce. Devon uses 8 oz of cheese for every 9 oz of cream. Kylie uses 11 oz of cheese for ever

Rzqust [24]

Answer:

Kylie's sauce has a greater proportion of cheese.

Step-by-step explanation:

5 0

3 years ago

Find three consecutive EVEN integers such that the sum of the smallest number and twice the middle number is 20 more than the la

nordsb [41]

define the 3 numbers

smallest number = x

middle number = x + 2

largest number = x + 4

write the equation

sum of the smallest number and twice the middle number

$\begin{gathered} x+2(x+2) \\ x+2x+4 \\ 3x+4 \end{gathered}$

20 more than the largest number

$\begin{gathered} x+4+20 \\ x+24 \end{gathered}$

equal the expressions

$\begin{gathered} 3x+4=x+24 \\ 3x-x=24-4 \\ 2x=20 \\ x=\frac{20}{2} \\ x=10 \end{gathered}$

the numbers should be 10, 12 and 14

$\begin{gathered} 10+2\cdot(12)=14+20 \\ 10+24=34 \\ 34=34 \end{gathered}$

5 0

1 year ago

Calculate the total area of the bottom sections of the back and the two side walls which should be tiled.Give your answer in squ

arsen [322]

Step-by-step explanation:

calculate the total area of the bottom sections of the back and the two side walls which should be tiled.Give your answer in squared metres rounded a

accurately to 2 decimals

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2 years ago

A seed company planted a floral mosaic of a national flag. The perimeter of the flag is 2,120 ft Determine the flag's width and

Nookie1986 [14]

Answer:

the width is 360 ft

Step-by-step explanation:

The computation of the width of the flag is shown below:

Let us assume the width be x

So the length would be x + 340

And, the perimeter is 2,120 ft

So the formula is

Perimeter = 2(length + width)

2,120 = 2(x + 340 + x)

2,120 = 2x + 680 + 2x

2,120 = 4x + 680

4x = 2,120 - 680

x = 360

hence, the width is 360 ft

7 0

3 years ago

Simplify (3х2 – 2) + (2х2 – бх + 3).

kolbaska11 [484]

Answer:

5x^2 -6x +1

Step-by-step explanation:

(3х^2 – 2) + (2х^2 – бх + 3).

Combine like terms

(3х^2 + 2х^2 – бх + 3-2)

5x^2 -6x +1

4 0

3 years ago