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3 years ago

Someone please help!!

Mathematics

1 answer:

Wittaler [7]3 years ago

3 0

A. (X+7)^2
B.(x-8)^2..............

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You are at a festival and notice a lady is making winter wear by knitting. She sells five hats and three scarves for a total cos

expeople1 [14]

Answer:

Cost of Hats = $15

Cost of Scarves = $8

Step-by-step explanation:

Let

Cost of Hats = x

Cost of Scarves = y

5x + 3y = 99 (1)

3x + 5y = 85 (2)

Multiply (1) by 5 and (2) by 3

25x + 15y = 495

9x + 15y = 255

Subtract

25x - 9x = 495 - 255

16x = 240

Divide both sides by 16

x = 240 / 16

= 15

x = $15

Substitute x = 15 into

5x + 3y = 99

5(15) + 3y = 99

75 + 3y = 99

3y = 99 - 75

3y = 24

y = 24/3

= 8

y = 8

Cost of Hats = $15

Cost of Scarves = $8

3 0

3 years ago

Julie drank 4 5 liter of water Monday before going jogging. She drank 2 3 liter of water after her jog. How much water did Julie

ValentinkaMS [17]

Answer:

$\frac{22}{15}$

Step-by-step explanation:

The computation of the Julie drink altogether is as follows:

$= \frac{4}{5} + \frac{2}{3}\\\\= \frac{12 + 10}{15} \\\\= \frac{22}{15}$

We simply added the total liter of water that she took before going jogging and after her jog

4 0

3 years ago

Evaluate (−23)×(−23)3 by using the Laws of Exponents

Nikolay [14]

Given:

$\left(-\dfrac{2}{3}\right)\times \left(-\dfrac{2}{3}\right)^3$

To find:

The value of given expression by using the Laws of Exponents.

Solution:

We have,

$\left(-\dfrac{2}{3}\right)\times \left(-\dfrac{2}{3}\right)^3$

Using the Laws of Exponents, we get

$=\left(-\dfrac{2}{3}\right)^{1+3}$ $[\because a^ma^n=a^{m+n}]$

$=\left(\dfrac{-2}{3}\right)^{4}$

$=\dfrac{(-2)^4}{(3)^4}$ $[\because \left(\dfrac{a}{b}\right)^n=\dfrac{a^n}{b^n}]$

$=\dfrac{(-2)\times (-2)\times (-2)\times (-2)}{(3)\times (3)\times (3)\times (3)}$

$=\dfrac{16}{81}$

Therefore, the value of given expression is $\dfrac{16}{81}$ .

3 0

3 years ago

Choose the property that justifies the following statement. If x = 2 and x + y = 3, then 2 + y = 3.

user100 [1]

.................................

4 0

3 years ago

If my loan is 234,000 and my interest rate is 5% how much will my monthly payment be

zubka84 [21]

Answer:

4680 I think

Step-by-step explanation:

I divided your loan and interest rate by 5%

6 0

3 years ago