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3 years ago

When x=2 and y=4 what is value of 7x-y

Mathematics

2 answers:

shusha [124]3 years ago

5 0

You have to substitute each number in. So 7(2)-4=10

alexira [117]3 years ago

4 0

Answer:

Step-by-step explanation:

So what we are doing in this question is simple substitution

So x = 2, y = 4

7x - y

So lets split it up first

7 * (2)

We plugged in 2 for x

This is equal to 14

So the equation is looking like

14 - y

Now lets do the second part

- y

- (4)

We plugged in 4 for y

So no our equation looks like

14 - 4

= 10

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- There are 24 bottles of water in a case.

muminat

Answer:

Step-by-step explanation:

No. Of bottles in a case × No. Of cases bought

24 × 4

= 96

7 0

3 years ago

Select one:<br> a. 4<br> b.5<br> c. 6<br> d. 7

tino4ka555 [31]

Answer:

Step-by-step explanation:

Given 2 secants intersect a circle from a point outside the circle, then

The product of the external part and the entire part of one secant is equal to the product of the external part and the entire part of the other secant, that is

x(x + 10 + x) = 6(6 + 10 + x)

x(2x + 10) = 6(16 + x) ← distribute parenthesis on both sides

2x² + 10x = 96 + 6x ← subtract 96 + 6x from both sides

2x² + 4x - 96 = 0 ← in standard form

Divide through by 2

x² + 2x - 48 = 0 ← factor the left side

(x + 8)(x - 6) = 0

Equate each factor to zero and solve for x

x + 8 = 0 ⇒ x = - 8

x - 6 = 0 ⇒ x = 6

However x > 0 ⇒ x = 6 → C

7 0

3 years ago

? Don't Send links, don't Write random things and get the points for free.

alekssr [168]

Answer:

$V = 1847.26\ ft^3$

Step-by-step explanation:

Step 1: Determine the volume

$V=\pi r^2h$

$V = \pi *(7\ ft)^2 * (12\ ft)$

$V = \pi *49\ ft^2 * 12\ ft$

$V = \pi * 588\ ft^3$

$V = 1847.26\ ft^3$

Answer: $V = 1847.26\ ft^3$

6 0

2 years ago

If I had to transfer 3 litres of water from one container to another with only a mug which can hold 1/8 of a litre each time, ho

miv72 [106K]

24 times as it takes 8 times to fill 1 Litre so 8x3 = 24

6 0

3 years ago

Vectors, I need help plz

Aloiza [94]

DC :AB=3:2 can be written as

DC/AB=3/2

Then you can get the answers easily

8 0

3 years ago