A variable needs to be eliminated to solve the system of equations
below. Choose the correct first step.
–9x – 10y = -42
-9x + 7y = 60

Answer:

Check out the link below

Step-by-step explanation:

https://brainly.com/question/11665146

Answer:

We know

y = 3.5x represents the cost of x pounds of raisins.

Also, cranberries costs $18 per 4 pounds

So, to graph these proportions, we have to find the equation for cranberries, if 4 pounds costs $18, that means 1 pound of cranberries is $4.50, this is the ratio of change of cranberries, using this ratio, we can say that the relation is

y = 4.5x

If you compare, cranberries are more expensive than raisins, the image attached shows both proportion graphed.

Therefore, raisins represent the lower unit price, $3.50 per pound, while cranberries represent the higher unit price, $4.50 per pound.

Answer :

well one line takes the slope of y=3.5x

The cranberries take the slope of Y=4.5x

so raisins have the lowest unit price.

Answer:

-6z - 5

Step-by-step explanation:

1 - 9z + 3z - 6

1 + (-6) + (-9z) + 3z

-5 - 6z  or -6z - 5  

Answer:

Your graph is a parabola and needs to open down because the equation is negative. And your vertex is at (0,-4)

Answer:

the answer is A

Step-by-step explanation:

several steps of math reversing the equation

Step-by-step explanation:

Given

Radius (r) = 13 mm

Area of the circle

= πr²

= 3.14 * 13 *13

= 530.66 mm²

Hope it will help :)

Answer:

8

Step-by-step explanation:

Answer:

-7x + 8(x + 1) = -7

Step-by-step explanation:

The area is approximately 50.27in^2

Answer:

1) x=-3  (D)

2) x=10  (G)

3) x=1  (A)

4) x=3  (C)

Step-by-step explanation:

Answer:

[tex]\frac{2x}{\sqrt{4x^{2} -1} }[/tex]

Step-by-step explanation:

This function can be written as:

[tex]\frac{1}{cos(sin^{-1}(\frac{1}{2x})) }[/tex]

[tex]sin^{-1}(\frac{1}{2x})[/tex] means the angle whose sine is 1/(2x).  This implies that the denominator is the cosine of the angle whose sine is 1/(2x)

Think of a right triangle and consider the angle with this sine.  Then the opposite side has length 1 and the hypotenuse has length  2x.  The Pythagorean theorem then implies that the adjacent side is

[tex]\sqrt{4x^{2} -1}[/tex]

The cosine of the angle is adjacent over hypotenuse, so the cosine is

[tex]\frac{\sqrt{4x^{2} -1}}{2x}[/tex]

The secant is the inverse of the cosine, so the answer is

[tex]\frac{2x}{\sqrt{4x^{2} -1} }[/tex]

Answer:

£3692

Step-by-step explanation:

A = p(1 + r/n)^nt

Where,

A = future value

P = principal = £2350

r = interest rate = 4.2% = 0.042

n = number of periods = 1(annual)

t = time = 4 years

A = p(1 + r/n)^nt

= 2350(1 + 0.042/1)^1*4

= 2350(1 + 0.042)^4

= 2350(1.042)^4

= 2350(1.5789)

= 2770.42

A = £2770.42

Total years = 10

Remaining years = 10 - 4

= 6 years

Remaining 6 years

P = £2770.42

r = 4.9% = 0.049

n = 1

t = 6

A = p(1 + r/n)^nt

= 2770.42(1 + 0.049/1)^1*6

= 2770.42(1 + 0.049)^6

= 2770.42(1.049)^6

= 2770.42(1.3325)

= 3691.59

A = £3691.59

Approximately £3692

Answer:

7x+1

Step-by-step explanation:

2x+1+5x

Add like-terms

2x+5x+1

7x+1

Answer:

16 to 9

Step-by-step explanation:

Represent donut with frosting with D1 and donut without frosting with D2.

So, we have:

[tex]D_1 = 32[/tex]

[tex]D_2 = 18[/tex]

Required

Find the ratio of D1 to D2

This is calculated as:

[tex]D_1 : D_2[/tex]

Substitute values for D1 and D2

[tex]D_1 : D_2 = 32 : 18[/tex]

Divide by 2

[tex]D_1 : D_2 = 32/2 : 18/2[/tex]

[tex]D_1 : D_2 = 16 : 9[/tex]

The ratio of donuts with frosting to donuts without is 16 to 9

Answer:

16 to 19

Step-by-step explanation:

Answer:

-5 and 17

Step-by-step explanation:

-5+17 = 12

-5*17 = 12

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Step-by-step explanation:

x + 62° = 90°

x = 90° - 62°

x = 28°

Answer:

77

Step-by-step explanation:

Answer:

77 degress Farenheit

Step-by-step explanation:

Formula

(25°C × 9/5) + 32 = 77°F

Answer:

10(6)

Step-by-step explanation:

Hope it's right.....

Answer:

No. pp you can fit in a van: 6,

No. pp you can fit in a bus: 20

Step-by-step explanation:

Let v = # of pp in vans, and let b = # of pp in buses:

8v + 9b = 228,

4v + 5b = 124

If we solve this system of equations by substitution, we isolate the first eq. for v and then substitute into the bottom eq:

v = 228-9b/8,

Substitute v = 228-9b/8 into bottom eq:

[4 * 228-9b/8 + 5b = 125]

[228+b/2=124]

[228+b = 248]

[b = 20]

Now substitute 20 to find no. of pp in the vans:

v = 228 - 9(20)/8 = 228  - 180/8 = 48/8 = 6

Answer:

-12x^2+6x

Step-by-step explanation:

-3x(4x-2)

-12x^2+6x

The standard form of the polynomial is -12x² +6x.

A polynomial is an equation made up of exponents, constants, and variables that is combined using mathematical operations including addition, subtraction, multiplication, and division.

The given expression is  – 3x (4x - 2)​

Solving further,

–3x (4x - 2)​

=-12x² +6x.

The standard form of the polynomial is -12x² +6x after multiplying  – 3x (4x - 2)​

To learn more about the Polynomials;

brainly.com/question/11536910

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Answer:

The correct answer would be B I believe

Step-by-step explanation:

Answer:

your future account value: $13,113.94

Step-by-step explanation:

Answer:

13113.94

Step-by-step explanation:

[tex]PV(1+\frac{i}{n})^{nt}\\\\6000(1+\frac{.0782}{365})^{10*365}\\\\6000(1.0002142)^{3650}\\6000*2.1856= 13113.94[/tex]

Answer: I believe the answer is just 5pg?

Step-by-step explanation: Hope this helps but sorry if it's wrong. Not sure if I'm understanding the question correctly.

Answer: 5pg

Step-by-step explanation:

Like terms are terms that have the same variables and powers. E.g. 8p²g+9p²g=17p²g

8+9=17

8pg+9pg=17pg

8pg²+9pg²=17pg²

How to work out the question:

6pg+5pg=11pg

11pg-6pg=5pg

Answer:

1.) C

2.) miles

3.) Car A is faster

Answer:

1.greater than 100%

2.less than 100%

Step-by-step explanation:

A whole is represented by the percentage 100%. Therefore, if the part being targeted is bigger than the whole then it would be greater than 100%. While, if the part is smaller than the whole then it would be less than 100%. This is always true in every scenario due to "a whole" being represented as the entirety of the object or data in question, which is why in numerical value it is shown as being 100%

Answer:

the answer you can try is

186x-7

Answer:

1853

Step-by-step explanation:

6(80/4+2*3+5)-7, 6(31)-7, 1860-7=1853

9514 1404 393

Answer:

  x ≤ 2

Step-by-step explanation:

Eliminate parentheses, collect terms, separate variable terms from constant terms.

  -5(x +4) ≥ 4x -38 . . . . . given

  -5x -20 ≥ 4x -38 . . . . . eliminate parentheses

  -20 ≥ 9x -38 . . . . . . . . add 5x

  18 ≥ 9x . . . . . . . . . . . . . add 38

  2 ≥ x . . . . . . . . . . . . . . . divide by 9

Answer:

i have very few knowledges sooooo

Step-by-step explanation:

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-Your friend, Bill Cipher

Step-by-step explanation: Have a great Valentines day <3