If x=−1and y=−3, then 5(x2−7+y)=

Answer:

Step-by-step explanation:

the student buys a total of 8 magazines for $14.00

x+y = 8

x = 8-y

2x+1.6y = 14

2(8-y)+1.6y = 14

16-2y+1.6y = 14

16-0.4y = 14

0.4y =16-14 = 2

y = 2/0.4 = 5

x = 8-y = 3

The correct equation best represents the situation is,

⇒ x + y = 8

And, 2x + 1.60y = 14.00

Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.

Given that;

A student buys (x) fashion magazines and (y) sports magazines.

And, Each fashion magazine costs $2.00 and each sports magazine costs $1.60.

Here, The student buys a total of 8 magazines for $14.00.

Hence, We can formulate;

⇒ x + y = 8

And, 2x + 1.60y = 14.00

Thus, The correct equation best represents the situation is,

⇒ x + y = 8

And, 2x + 1.60y = 14.00

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Answer:

11/9

Step-by-step explanation:

5/9 + 4/6 = 11/9

Answer:  sixty six fifty fourths  

30/54 + 36/54 = 66/54

Step-by-step explanation: Find a common denominator

Here, it looks like we can multiply the 9 × 6 to get 54

Then we divide the original denominator into the common denominator, then multiply the numerator by the quotient to get an equivalent fraction to add.

Starting with the 5/9   54÷9 = 6   The quotient, 6 multiplies by the numerator 5

6 × 5 = 30  That is the new numerator.

30/54 is the equivalent fraction for 5/9

Now 4/6   54÷6 = 9   Multiply this quotient, 9 times the numerator 4

9 × 4 = 36  That is the new numerator

36/54 is the equivalent fraction for 4/6

Add the numerators of the equivalent fractions keep the denominator the same:

30/54 + 36/54 = 66/54

It is possible to simplify this process. 4/6 is equivalent to 2/3 or 6/9

We could add  5/9 + 6/9 to get 11/9

66 and 54 are both divisible by 6, so 66/54 can be simplified to 11/9 or the mixed number 1²/₉

Answer:12b

Step-by-step explanation:

Here,

We have only one variable

So we can multiply it with number

=6×2b

=12b

Hope it helps you

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Answer:

85

Step-by-step explanation:

Answer:

85

Step-by-step explanation:

Bill would have to get the same grade as his average of his prior grades. Because those average to 85.

Step-by-step explanation:

-6x-2y+8

-6x -6x

÷-2 (-2y=-6x+8)

3x=-4

x= 3x

y= -4

y=-4-3x

Answer:

19.2cm

Step-by-step explanation:

You can solve with a proportion because all sheets of paper are the same thickness

[tex] \frac{500}{8} = \frac{1200}{x} [/tex]

[tex]x = \frac{1200 \times 8}{500} [/tex]

x = 19.2cm

Step-by-step explanation:

The answer is 10 percent

Step-by-step explanation:

10% is the answer of this questions

Answer:

u can use "a squared + b squared = c squared"

in this case the two legs are 10 and 24 because they are near the right angle. the hypotenuse is always across from the right angle, so it's the long side that connects the two legs. Now you can plug in 10 and 24 for the pythagorean theorem and solve for the hypotenuse. that would be 10 squared plus 24 squared equal to c squared.

Answer:

26

Step-by-step explanation:

You would use the Pythagorean theorem to solve for the last side.

Pythagorean theorem- a^2+b^2=c^2

a and b =sides

c=hypotenuse

Since you are finding the hypotenuse(c), you don't have to rearrange the formula

plug in a and b.

10^2+24^2=c^2

solve

100+576=c^2

676=c^2

do the square root of 676 to get rid of the c^2

26=c

Answer:

C. 10.0 m

Step-by-step explanation:

[tex]C=2\pi r[/tex]

radius is half of diameter

[tex]r = \frac{d}{2} \\r=\frac{3.2}{2} \\[/tex]

[tex]C= 2 (3.14) \frac{3.2}{2}[/tex]

[tex]C= (3.14)3.2\\C=10[/tex]

Answer:

1250 people

Step-by-step explanation:

Population density = total population / land area

Population density = 50

total population = x

land area 25

50 = x / 25

x = total population = 50 x 25 = 1250 people

Answer:

292.32

Step-by-step explanation:

i took 9.75 times 30 and then minus 10% minus 6.2% and minus 1.45% and got that answer

Answer:

6 x

Step-by-step explanation:

because 1 times 6 then 2 then 3 and so on

Answer:

12

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

Here, we want to determine the equation based on the given transformation rules

dilation by a factor of 3 from the y axis

That would firstly be;

y = (3x)^2/3

Translation of 5 units on negative x

y = 3(x-5)^2/3

2 units in the positive y direction

That would be;

y = (3(x-5))^2/3 + 2

option A is correct

Answer:

-8,4 and 4,-5

Step-by-step explanation:

Answer:

Range: [-1, 6)

General Formulas and Concepts:

Algebra I

Step-by-step explanation:

According to the graph, our line's y-values span from -1 to 6. Since -1 is closed dot, it is inclusive in the range; since 6 is open dot, it is exclusive from the range:

Interval Notation: [-1, 6)

Inequality Notation: -1 ≤ y < 6

Answer:

your picture is not loading for me

Answer:

its b because

Step-by-step explanation:

24÷12 is 2 and if u do 12 × 2 and keep going u will get the next answer

Answer:

Step-by-step explanation:

1) √36 = 6

2) ^3 √8 = 2

3) ^3 √64 = 4

Answer:

7 + 3 sqrt 2

7 - 3 sqrt 2

Step-by-step explanation:

Answer:

the simplest form is 5/6

Step-by-step explanation:

I hope this helps!

Answer:

2,-5

Step-by-step explanation:

Answer:

p=500

Step-by-step explanation:

The value of p is 500 in the equation  100+0.05p=0.25p.

Two algebraic expressions having same value and symbol '=' in between are called as an equation.

Given:

The equation,

100+0.05p=0.25p

To solve the equation:

Simplify the equation,

100 = 0.25p - 0.05p

0.20p = 100

p = 100/0.20

p = 500

Therefore, 500 is the value of p.

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Answer:

[tex]0.10d + 0.25q > 143.88[/tex]

Step-by-step explanation:

Let the total dimes collected be d.

[tex]1\ dime = \$0.10[/tex]

[tex]d\ dimes = \$0.10d[/tex]

Let the total quarters collected be q.

[tex]1\ quarter = \$0.25[/tex]

[tex]q\ quarters = \$0.25q[/tex]

[tex]Last\ Year = \$143.88[/tex]

Required

Represent as an inequality

The total collection, this year, can be represented as:

[tex]Total = 0.10d + 0.25q[/tex]

From the question, we understand that:

This year's collections is expected to be greater than last year's

This can be represented as:

[tex]Total > Last\ Year[/tex]

Substitute in the right values:

[tex]0.10d + 0.25q > 143.88[/tex]