Solve the system of equations -30 + 7y = -18 and 4x – 4y = 8 by combining
the equations.

Answers

Answer 1
the answer is (4/23,-42/23).
good luck!

Related Questions

Help me please help help mee I’m going to get my head bashed and I’m going to get whooped please help!!

Answers

Answer: A. $5.15

Explanation:
10 Quarters=$1.50
17 Dimes=$1.70
40 Nickles=$0.80
15 Pennies=$0.15
Add all of that together to get the answer.

what is the solution to this system of equations? 2x + y = -12 3x - 4y = 5

Answers

Answer:

=-4

Step-by-step explanation:

Which is the graph of f (x) = f (one-half) Superscript x? On a coordinate plane, an exponential decay function decreases from quadrant 2 into quadrant 1 and approaches y = 0. It crosses the y-axis at (0, 4) and goes through (1, 1).

Answers

Answer:

answer is B. :)

The graph of the given f(x) shows that: on a coordinate plane, an exponential decay function decreases from quadrant 2 into quadrant 1 and approaches y = 0. It crosses the y-axis at (0, 4) and goes through (2, 1).

What is the graph of a function?

The graph of a function is a visual representation of the function for which the slope, the x-intercept, and the y-intercept can be shown or determined from the graph.

Given that:

f(x) = 4(1/2)ˣ

The domain of the function are values of f(x) for which f(x) ranges from:

(-∞,∞).The y-intercept is (0,4)

The graph of the function as shown in the image attached shows that the graph decrease from the 2nd quadrant into the 1st quadrant and approaches = 0. It crosses the y-axis at (0, 4) and goes through (2, 1).

Learn more about graph of a function here:

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A contractor purchases 5 dozen pairs of padded work gloves for 71.40 he incorrectly calculates the unit price as 14.28 per Pair for the expense report . What is the correct unit price ? What is the error?

Answers

Answer:

0%

Step-by-step explanation:

Step one:

given data

A contractor purchases 5 dozen pairs of padded work gloves for $71.40

the unit price will be

total number of gloves

5 pairs

unit cost per glove

=71.40/5

=$14.28 per glove

The estimated cost per pair is

$14.28 per pair

The error is

%Error= real price -estimated /estimated*100

%Error= 14.28-14.28/14.28*100

%Error= 0.0*100

%Error= 0%

A bakery produces 2 batches of bread with 80 loaves in each batch. It sold 30 loafs each hour. How many loaves of bread were sold in 4 hours? How many loaves of bread were left to sell?

Answers

Answer:

Total number of loaves of bread sold in [tex]4[/tex] hours is [tex]120[/tex] and [tex]40[/tex] loaves of bread will remain unsold.

Step-by-step explanation:

Given: A bakery produces [tex]2[/tex] batches of bread with [tex]80[/tex] loaves in each batch.

           It sold [tex]30[/tex] loafs each hour.

To find: How many loaves of bread were sold in [tex]4[/tex] hours? How many loaves of bread were left to sell?

Solution:

Total number of loaves of bread produced [tex]=2 \times 80=160[/tex].

Number of  loafs sold each each hour [tex]=30[/tex].

So, number of loafs sold in [tex]4[/tex] hours[tex]=4 \times 30=120[/tex].

Therefore, number of loaves of bread that were remain unsold [tex]=160-120=40[/tex]

Hence, total number of loaves of bread sold in [tex]4[/tex] hours is [tex]120[/tex] and [tex]40[/tex] loaves of bread will remain unsold.

Suppose at the start of this year you got a salary increase of 5 percent from your employer. If the prices of the goods and services you typically purchase increase 5 percent during the year, you would find for the year that you have experienced on balance:
a. Higher real income and higher nominal income.
b. Higher nominal income, but no change in real income.
c. Higher real income, but no change in nominal income.
d. Higher real income, but lower nominal income.

Answers

Answer:

I belive it is c if not it might be a

Step-by-step explanation:

You estimate that the length of your
classroom is 20 feet. The actual length is 25
feet. Find the percent of error.

Answers

Answer:

The percent error is 20%.

Step-by-step explanation:

The general formula is to subtract the actual value from the estimated value, take the absolute value of the difference, divide that answer by the actual value, then multiply it by 100.

So, 20 (estimated) minus 25 (actual) is -5. The absolute value of -5 would be 5, since absolute value is always positive. Divide 5 by the actual value, 25, and you get 0.2. Multiply 0.2 by 100 to get a percent value, and the answer will amount to 20%. Hope this helps.

I need help ASAP. Is it A B C or D???

Answers

Can you zoom in more ?

solve: 3 (x + 4) - 5 (x - 1) <5

Answers

Answer:

x>6

Step-by-step explanation:

Answer:

E

Step-by-step explanation

3(x+4)-5(x-1)<5 EXPAND

2x+17<5

Subtract 17 from both sides

2x+17-17<5-17

Simplify

-2x<-12

Multiply both sides by -1 (reverse the inequality right)

(-2x)(-1)>(-12)(-1)

Simplify

2x>12

Divide both sides by 2

2x/2>12/2

Simplify

x>6

How many solutions does this system have?
6x+3y =-12
y=-2x+4
O one
O two
O an infinite number
O no solution

Answers

Answer:

one

Step-by-step explanation:

Because I did the work and it only showed one.

I need help! Please show your work

Answers

Answer:

It's C    y-4=-2(x+1)

Step-by-step explanation:

HELP! 10 points! The average of Amy's, Ben's, and Chris's ages is 6. Four years ago, Chris was the same age as Amy is now. In four years, Ben's age will be 3/5 of Amy's age at that time. How many years old is Chris now?

Answers

Answer:

10

Check by going backwards

Answer:

13 y/o

Step-by-step explanation:

a + b + c )/3 = 9

c-4 = a    c = a+4

b+3       = 2/3 ( a +3)        b = 2/3( a+3)  - 3       Sub the red in to the top equation

(a + 2/3(a+3)-3   +   a+4 )/3 = 9

2  2/3 a   +3 = 27

8/3 a = 24

a = 9               then   c=a+4 = 13  y/o                 and b=5

x^2+ 8^2=
helppppppppppppppp​

Answers

= x^2 +64




answer ^xxxx
x^2+ 8^2=
helppppppppppppppp

A local fish market is selling fish and lobsters by the pound. The fish, f, costs $4.25 a pound, while the lobster, l, costs $9.00 a pound. The fish market sells 25.5 pounds and makes $196.25. How many pounds of fish and pounds of lobster did the market sell?

Answers

9514 1404 393

Answer:

7 pounds of fish18.5 pounds of lobster

Step-by-step explanation:

Let x represent the number of pounds of lobster sold. Then 25.5-x is the number of pounds of fish. The total money made is ...

  4.25(25.5-x) +9.00x = 196.25

  4.75x + 108.375 = 196.25 . . . . . simplify

  4.75x = 87.875 . . . . . . . . . . . subtract 108.375

  x = 18.5 . . . . . . . . . . . . . . . divide by 4.75

The market sold 7 pounds of fish and 18.5 pounds of lobster.

Find the product of -3.3 and -2.2.

Answers

Answer: -5?5

Step-by-step explanation:

Answer:

7.26

Step-by-step explanation:

So, the product of something is multiplication.

so,

- 3.3 x -2.2 = 7.26

so, your answer is 7.26

QRST is a rhombus. If RU=3, US=4 find the perimeter of the rhombus.

Answers

Answer:

you need to be more specific

Step-by-step explanation:

What are the differences between commission, tax, and discounts?

Answers

Answer:

Commission is when you invoice an agent “gross” and the agent pays you the “gross” value. ... Discount is when you invoice an agent “net” of his discount and he pays you the “net value keeping the “discount” for themselves.

Answer:

Commission is when you invoice an agent “gross” and the agent pays you the “gross” value. the Commission is then reserved for payment at a later date.

and

Discount is when you invoice an agent “net” of his discount and he pays you the “net value keeping the “discount” for themselves.

thats all ik

Haley saves $2 out of every $5 that she makes babysitting. If Haley saved $10, how much did she make babysitting?

Answers

Answer:

She made a total of 50 dollars if you subtract the savings she saved she has a total of 40 dollars to spend but the total to this question is 50. The answer is 50 because 2 times 5 equals 10 so she needs to do 5 sessions of babysitting.

Your Final answer is 50

Can any kind soul help me ASAP!​

Answers

Answer:

the answer is B

x = 1

Step-by-step explanation:

the symmetry is in the middle of the curve like a mirror and the equation of the mirror or symmetry line is x=1

If one face of a cube has a surface area of 5.25 square meters, what is the surface area of the entire cube

Answers

Answer:

11.25

Step-by-step explanation:

if a cube has 6 equal sides, you want to multiply 5.25 by 6 to get the surface area for the entire cube.

PLease help ill mark brainliest

Answers

Answer:

n=2

Step-by-step explanation:

Find the Volume of the cone​

Answers

Answer:

1005.12

Step-by-step explanation:

first we need to know that redious isn't gien

so we have to find redious

according to Pythagoras theorem

a²+b²=c²

a=√c²-b²

a=17²-15²

a=√(17+15)(17-15)

a=√64

a=8

[tex]as \: we \: khow \: volume \: of \: a \: cone[/tex]

[tex] = \frac{1}{3} \pi {r}^{2} h[/tex]

[tex] \frac{1}{3} \pi \times {8}^{2} \times 15[/tex]

[tex] \frac{\pi}{3} \times 64 \times 15[/tex]

[tex]\pi \times 64 \times 5[/tex]

[tex]3.141 \times 64 \times 5[/tex]

[tex]1005.12[/tex]

You , malakhi , yanis , nyla , Aaliyah go to a new tapas restaurant in jamaica , queens each of you order 6 small dishes that each cost the same amount and everyone got a drink for $3 each. How much was each small plate if they spent a total of $75​

Answers

each dish costs two dollars.

Please help me vote you brainlest

Answers

I think it’s 10 not sure but hope this help

If f(x) = x2 + 5 find f(-3)

Answers

Step-by-step explanation:

If [tex]\tt{ f(x)=x^2+5 }[/tex] ⠀

Then,

[tex]\tt{f(-3)=(-3)^2+5 }[/tex] ⠀

[tex]\tt{f(-3)=9+5 }[/tex] ⠀

[tex]\tt{f(-3)=15 }[/tex] ⠀

Solve for the missing side. ( show ur work)

Answers

The value of x is 40
Ps. Didn’t I answer one of your earlier questions?
Anyway here’s the working:

Need help please please

Answers

Answer:

D or 176.71 inches squared.

Step-by-step explanation:

the radius is 7.5. put it in a calculator and you get D.

Answer:

[tex]176.7 in^{2}[/tex]

Step-by-step explanation:

The area of a circle is defined as:

[tex]A = \pi r^{2}[/tex]

Where r is the radius and A is the area. We're given the diameter, 15 inches. The radius is half of the diameter, so the radius is therefore 7.5 inches. Now let's take this value back into the formula above:

[tex]A = \pi r^{2} =\pi (7.5)^{2} = 56.25\pi = 176.7 in^{2}[/tex]

So the circle has an area of [tex]176.7 in^{2}[/tex]

Hope this helps!

⚠️warning answer fast⚠️

What is the volume of a rectangular prism with a length of 7mm, width of 5mm,and height of 6mm?

Answers

i believe the volume of the shape is 210mm. the formula is v=lwh. so you multiply all the numbers to get 210. hope that helped!

2/3x-7=11
Pls help

Answers

Answer:

x = 27

Step-by-step explanation:

Given

[tex]\frac{2}{3}[/tex] x - 7 = 11 ( multiply through by 3 to clear the fraction )

2x - 21 = 33 ( add 21 to both sides )

2x = 54 ( divide both sides by 2 )

x = 27

The value of x in the equation 2/3x-7 =1 is 12.

The given equation is 2/3x-7 =1.

x is the variable in the equation.

Minus is the operator.

To solve for x add 7 on both sides:

2/3x-7+7=1+7

2/3x=8

Multiply both sides by 3/2.

x=3/2×8

x=12

Hence, the value of x in the equation is 12.

To learn more on Equation:

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Which type of transformation maps trapezoid PQRS onto trapezoid P'Q'R'S'? reflection rotation translation dilation

Answers

Answer:

Dilation.

Step-by-step explanation:

From the given picture , it can be seen that the size of trapezoid P'Q'R'S' is decreased from trapezoid PQRS .

Reflection , rotation and translation are rigid motions that produces congruent images and do not change the size of the shapes.

But dilation is not a rigid motion because it changes the size of the shape by using a scale factor.

Hence, the transformation maps trapezoid PQRS onto trapezoid P'Q'R'S' is "Dilation".

Answer: D) dilation

Step-by-step explanation:

on edge

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