All categories

3 years ago

Wat 4x + 8y=40 when y=0.8?

1 answer:

5 0

Hey there! :)

First, let's substitute y with 0.8, and multiply by 8

0.8 × 8 = 6.4

Here is the new equation:

4x + 6.4 = 40

Now, subtract 6.4 from 40

40 - 6.4 = 33.6

That means 4x = 33.6

Divide both by 4

4x ÷ 4 = x
33.6 ÷ 4 = 8.4

x = 8.4

Hope this helps :)

You might be interested in

How much boric is contained in 15 g of a 5% boric acid cream?

GREYUIT [131]

Answer:

.75 g

Step-by-step explanation:

If you have 15 g and 5% is boric then 15 *.05 =.75

8 0

3 years ago

Read 2 more answers

2 right triangles have identical angle measures but different side lengths. The first triangle has side lengths of 6, 10, 8 and

lisabon 2012 [21]

Answer:

Dilation

Step-by-step explanation:

Given: The first triangle has side lengths of 6, 10, 8 and the second triangle has side lengths of 3, 5, 4 such that these two right triangles have identical angle measures but different side lengths.

To choose: the correct option

Dilation refers to a transformation when a figure is reduced or enlarged.

Each side of the large triangle is halved to get the small triangle.

So, Dilation transformation maps the large triangle onto the small triangle

3 0

3 years ago

The cost of renting a car is $42 a day plus 25 cents per mile. How far can Alex drive in one day if he only has $162

earnstyle [38]

Answer:

Alex can drive 480miles in one day period.

Step-by-step explanation:

$162- $42 =$120

$120/0.25¢=480

480miles

8 0

3 years ago

PLSSS HELP I WILL GIVE BRAINLYIST 20 PTS!!!!!!! what is the difference between composition and decomposition and can they be use

Helga [31]

Answer: Decompose means the opposite, to take apart. In this lesson, the words composition and decomposition are used to describe how irregular figures can be separated into triangles and other polygons. The area of these parts can then be added together to calculate the area of the whole figure.

Step-by-step explanation:

8 0

3 years ago

Paul has an eight-year loan with a principal of $26,900. The loan has an interest rate of 8.18%, compounded quarterly. If Paul p

babymother [125]

Answer:

The answer is "option b"

Step-by-step explanation:

Amount = $26,900

r= 0.0818 %

$i=\frac{r}{4}\\\\$

$=\frac{0.0818}{4}\\\\=0.02045$

t= 8 years

$n= 8 \times 4$

$=32$

$D=\frac{1-(1+i)^{-n}}{i}\\$

$=\frac{1-(1+0.02045)^{-32}}{0.02045}\\\\=\frac{1-(1.02045)^{-32}}{0.02045}\\\\=\frac{1-0.52319627}{0.02045}\\\\=\frac{0.47680373}{0.02045}\\\\=23.3155858$