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2 years ago

Evaluate the expression when x= - 4 and y=7 9y-x

1 answer:

7 0

The equation would end up being 9x4-(-7), two negatives equal a positive changing it to, 9x4+7, which PEMDAS plays part in this having the multiplication go first, 9x4 equals 36+7=43

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What is 5m2- 15m- 200

vitfil [10]

Answer:

5(m + 5) (m - 8)

Step-by-step explanation:

5m2- 15m- 200

Start by pulling 5 out.

5(m^2 - 3m - 40)

We consider all factors of 40

1 40

2 20

4 10

5 8

Based on the middle term we know that 5 and 8 are our best option.

5(m 5) (m 8)

We know the signs have to be one + and one - because a - * - = + and + * + = +

Since 5 - 8 would give us -3 we know that our answer is

5(m + 5) (m - 8)

3 0

3 years ago

Factorise 2x^2 - 9x -5

Nostrana [21]

Answer:

(x-5)(2x+1)

Step-by-step explanation:

Its called google XD

5 0

3 years ago

Calculate the ratio to the nearest hundredth (Please do them all for me)<br>PLEASE!

earnstyle [38]

All of them are 3.14

I got them all right on I ready :)))

8 0

2 years ago

Larger pets need to be transported in larger portable kennels. Using a graphing calculator and the relationship between the widt

zzz [600]

Answer:

width: 1.9 ft
length: 2.3 ft
height: 1.7 ft

Step-by-step explanation:

The volume of a rectilinear shape is given by ...

V = W·L·H . . . . . where W, L, and H represent width, length, and height

Filling in the given information, we want to find a solution to ...

7.4 = x(x +0.4)(x -0.2)

If we write ...

f(x) = x(x +0.4)(x -0.2)

Then we're looking for the value of x that satisfies ...

f(x) -7.4 = 0

The attached graph shows that value to be 1.897, about 1.9 (feet). Then the desired kennel dimensions are ...

width: 1.9 ft
length: 2.3 ft
height: 1.7 ft

3 0

3 years ago

Some number was divided into 104.13. This quotient was multiplied by 4, after which the resulting product was added to 5. Given

SVEN [57.7K]

Answer:

The initial number is <u>-1218.321</u>.

Step-by-step explanation:

Let the initial number be 'x'.

The number 'x' is divided into 104.13.

So, we divide the number 'x' by 104.13. This gives,

$\dfrac{x}{104.13}$

Now, the quotient is multiplied by 4. So, this means we need to multiply 4 to the fraction above. This gives,

$\dfrac{x}{104.13}\times 4\\\\\frac{4x}{104.13}$

Now, 5 is added to the result. This gives,

$\frac{4x}{104.13}+5$

Now, as per question:

$\frac{4x}{104.13}+5=-41.8$

Now, solving for 'x', we add -5 both sides. This gives,

$\frac{4x}{104.13}+5-5=-41.8-5\\\\\frac{4x}{104.13}=-46.8\\\\4x=-46.8\times 104.13\\\\4x=-4873.284\\\\x=\frac{-4873.284}{4}=-1218.321$

Therefore, the initial number is -1218.321.

6 0

2 years ago