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2 years ago

Can you please solve AND EXPLAIN this equation: -2y is less than or equal to 2 - 2x

Mathematics

1 answer:

grin007 [14]2 years ago

3 0

Answer:

$y\geq -1 + x$

Step-by-step explanation:

$-2y\leq 2-2x\\$ Divide everything by 2

$-y\leq 1-x$ Divide everything by -1 and since y is negative, you flip the sign

$y\geq -1 + x$

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I believe you need to use the quadratic formula for this one, but I am not sure!

Nataly [62]

$4x^2+13=49$

To solve the value of x in the above equation, here are the steps.

1. Subtract 13 on both sides of the equation.

$\begin{gathered} 4x^2+13-13=49-13 \\ 4x^2=36 \end{gathered}$

2. Divide both sides of the equation by 4.

$\begin{gathered} \frac{4x^2}{4}=\frac{36}{4} \\ x^2=9 \end{gathered}$

3. Get the square root on both sides of the equation.

$\begin{gathered} \sqrt[]{x^2}=\sqrt[]{9} \\ x=\pm3 \end{gathered}$

The possible values of x are +3 and -3. The smaller value is -3.

6 0

7 months ago

2. A recipe for chicken marinade says, “Mix 3 parts oil with 2 parts soy sauce and 1 part orange juice.” If you need 42 cups of

tatuchka [14]

Answer

14x3 = 42

21x2=42

42x1=42

42 orange jucie,

21 soy sause

and 14 part oils

for number 3,

90.

8 0

2 years ago

Aashi buys

adoni [48]

Bread rolls = BR
Ketchup = K
Sausages = S

2BR +1K + 3S = £10 - 45p
2BR + 1K + 3S = £9.55

2BR = 1.40 x 2 = £2.80
1K = £1.80

£2.80 + £1.80 + 3S = £9.55
3S = £9.55 - £2.80 - £1.80
3S = £4.95
£4.95 / 3 = BR
S = £1.65

The answer is £1.65 for one pack of sausages

4 0

2 years ago

Can anybody help me plz I really need help !!!!

kipiarov [429]

Answer:

A) 75%

B) 76

Step-by-step explanation:

A) 39/52=0.75=75%

B)80x0.95=76

4 0

2 years ago

Explain in words what mistake you made and how will correct it. in a group of 20 children,there were 8 girls. which is the ratio

Nataly_w [17]

Well first do 20 children minus 8 girls to find how many boys there are:
20-8=16
So there are 16 boys. Therefore we can write the ratio of girls to boys as:
8/16
Then we can simplify this ratio by dividing it by 8 to get:
1/2
So the answer is the ratio of girls to boys in the group in simplest form is 1/2.

7 0

2 years ago