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3 years ago

8 = 3x + 6y Solve the equation for y

Mathematics

2 answers:

8_murik_8 [283]3 years ago

3 0

Y=6/8
Divide 6y by 8 to get Y :) Have a great night

Zielflug [23.3K]3 years ago

3 0

To find y, x=0.
3(0)=0
8=6y
y=1.33333333......

Vot me Brainliest :)

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The coordinates of points M,N, and P are ....

Rainbow [258]

Answer:

(-1, -1) Let me know if the explanation didn't make sense.

Step-by-step explanation:

If we graph the three points we can see what looks like a quadrilateral's upper right portion, so we need a point in the lower left. This means M is only connected to N here and P is only connected to N. So we want to find the slope of these two lines.

MN is easy since their y values are the same, the slope is 0.

NP we just use the slope formula so (y2-y1)/(x2-x1) = (-1-3)/(5-4) = -4.

So now we want a line from point M with a slope of -4 to intersect with a line from point P with a slope of 0. To find these lines weuse point slope form for those two points. The formula for point slope form is y - y1 = m(x-x1)

y-3 = -4(x+2) -> y = -4x-5

y+1 = 0(x-5) -> y = -1

So now we want these two to intersect. We just set them equal to each other.

-1 = -4x -5 -> -1 = x

So this gives us our x value. Now we can plug that into either function to find the y value. This is super easy of we use y = -1 because all y values in this are -1, so the point Q is (-1, -1)

8 0

3 years ago

Simply -3 3/4 divided by 2 1/2

Dima020 [189]

Answer:

$=-1\frac{1}{2}$

Step-by-step explanation:

Given the following question:

$-3\frac{3}{4} \div2\frac{1}{2}$

In order to find the answer, we first convert the mixed numbers into improper fractions. Then we use KCF (Keep, Change, Flip) and solve.

$-3\frac{3}{4} \div2\frac{1}{2}$
$-3\frac{3}{4} =12+3=-\frac{15}{4}$
$2\frac{1}{2}=2\times2=4+1=\frac{5}{2}$
$-\frac{15}{4} \div\frac{5}{2}$
$-\frac{15}{4} \times\frac{2}{5}$
$15\times2=30$
$4\times5=20$
$=-\frac{30}{20}$
$-\frac{30}{20} \div10=-\frac{3}{2}$
$-\frac{3}{2}=3\div2=-1\frac{1}{2}$
$=-1\frac{1}{2}$

Hope this helps.

4 0

2 years ago

A coin bank for donations for the protection of the reef contained Php 1,570. There were twice as many Php 5-coins as

kvasek [131]

Answer:

There are 144 Php 5-coins, 72 Php 10-coins and 130 Php-1 coins

Step-by-step explanation:

The amount of the coins in the coin bank = Php 1,570

The number of Php 5-coins = 2 × The number of Php 10-coins

The number of Php 5 coins = The number of Php 1-coins + 14

Let 'x' represent the number of Php-5 coins, let 'y' represent the number of Php 10-coins, and let 'z' represent the number of Php 1-coins, we get;

x = 2 × y...(1)

x = z + 14...(2)

5·x + 10·y + z = 1,570...(3)

From equation (1) equation (2), and equation three, we have;

y = x/2

z = x - 14

5·x + 10·x/2 + x - 14 = 1,570

11·x - 14 = 1,570

x = (1,570 + 14)/11 = 144

The number of Php 5-coins, x = 144

y = x/2

∴ y = 144/2 = 72

The number of Php 10-coins, y = 72

z = x - 14

∴ z = 144 - 14 = 130

The number of Php 1-coins, z = 130

6 0

3 years ago

Someone please help me with this

tatiyna

B similar AA criteria
there are two angles that measure the same and according to the AA criteria that means the two triangles are similar.

6 0

4 years ago

Chloe puts 4 soaps and two bottles of lotion in each gift basket. .she has 127 soaps and 85 bottles of lotion. how many gift bas

Sonja [21]

Given:1 basket = 4 soaps + 2 lotions127 total soaps85 total bottles of lotion First divide the total amount of soap by however many is needed to make single basket. 127/4 = 31.75 ≈ 31 sets Then divide the total amount of lotion by however many is needed to make single basket 85/2 = 42.5 ≈ 42 sets You will need to pick the whichever number is lower/ This will ensure that you have all the supplies you need to make a complete basket. Therefore, you can make 31 complete baskets.

3 0

3 years ago