Answers
Answer:
x = -3
Step-by-step explanation:
y = -x + 2
7x + 4y = -1
Subsitution method: (Substitute y)
7x + 4(-x+2) = -1
Expand.
7x + (-4x + 8) = -1
One plus and one minus make one minus. Two plus makes a plus.
7x -4x + 8 = -1
Simplify.
3x + 8 = -1
Isolate 3x.
3x = -1-8
= -9
Find x.
x = -9 ÷ 3
= -3
Related Questions
A number is at most 13
Answers
Answer:
Meaning?????
Step-by-step explanation:
Which statement best describes points P and Q?
Answers
Answer:
The y coordinates are the same since they are both at y= 4
Step-by-step explanation:
Jean-Claude equally shared a box of chocolates with two of his friends. The box weighed 9/5 pounds. How many pounds of chocolate did each person receive?
Answers
I find that if you transform fractions into decimals, they become marginally easier to work with. Nine over five in decimal form is one point eight. If we divide 1.8 by three (Jean-Claude and his two friends), then we come up with the answer 0.6, which, once turned back into a fraction, would be six over ten, or three over five.
?????????????????????????
Answers
Answer:
There are 0.00003 km in 3 cm
(Only 4 zeros after the decimal place)
Step-by-step explanation:
Answer:
it should be B 0.00003
Step-by-step explanation:
Hope this helps have a nice day :)
A student spelled 92% of the words on a spelling test correctly. If the test had 24 questions, how many words did the student spell correctly
Answers
Answer:
19
Step-by-step explanation:
A triangle has sides with lengths of 12 meters, 18 meters, and 19 meters. Is it a right
triangle?
Answers
Answer: yes
Step-by-step explanation:
the two sides are near the same with one smaller and i learned at sc that that makes it right
The length of a rectangle is 3x + 4 and the width is 2x + 7.
a. Write an equation for the perimeter P of the rectangle.
b. The perimeter of the rectangle is 62 feet. What is the value of x?
c. What are the length and width of the rectangle?
Answers
Step-by-step explanation:
P = 2 (2x+7) + 2(3x +4)Now, comparing the above with 62 we get x=4Length is 16 and width is 15
Martin charges $10 for every 5 bags of leaves he rakes. Last weekend, he raked 29 bags of leaves. How
much money did he earn
Answers
Answer: he earned $145
Step-by-step explanation: jus cuz I think so
Answer:
58
Step-by-step explanation:
please help me asap
Answers
Answer:
4 yards, thats what you get when you subtract 2 1/3 from 8 1/3
Answer:
4 yd
Step-by-step explanation:
6 1/3 - 2 1/3 is 4 yds because 1/3 - 1/3 is zero and 6 - 2 is 4
A professor grades students on four tests, a term paper, and a final examination. Each test counts as 15% of the course grade. The term paper counts as 20% of the course grade. The final examination counts as 20% of the course grade. Alan has test scores of
92, 78, 82, and 90.
Alan received an 80 on his term paper. His final examination score was 86. Use the weighted mean formula to find Alan's average for the course. (Round your answer to one decimal place.)
Answers
Answer:
The Alans's average for the course is 84.5
Step-by-step explanation:
We are given
There are 4 tests, A Term paper and a Final examination.
Score = 92, 78, 82, 90.
Term paper score = 80
Final examination score = 86
Weighted mean = ∑ w.f/∑w
also the sum of all the weights is 100% = 1
weighted mean = 15%*92 + 15%*78+15%*82+15%*90+20%*80+20%*86/1
= 51.3 + 33.2
= 84.5
Therefore the Alans's average for the course is 84.5
Challenge A warehouse store sells 5.5-ounce cans of tuna in packages of 8. A package of 8 cans
costs $16.72. The store also sells 6.5-ounce cans of the same tuna in packages of 3. A package of
3 cans costs $7.02. The store sells 4.5-ounce cans in packages of 5 cans for $7.65. Which
package is the best buy?
A package of the
V-ounce cans is the best buy.
Answers
Answer:
Step-by-step explanation:
the warehouse is the best buy because you get 44oz off tuna but if you buy the three pack you get 19.5oz and if you buy the five pack from store you 22.5oz of tuna
so the warehouse has the best deal on tuna
You start at (-1, 4). You move left 4 units and down 3 units. Where do you end?
Answers
Answer:
(-5,1)
Step-by-step explanation:
Answer:
(-5,1)
Step-by-step explanation:
Help plzzzzzzzzzzzzz
Answers
Answer:
it is a reflection of point q
Step-by-step explanation:
they both are on different sides of the x axis
Choose all of the expressions that are equal to 830,000. A. : 83 × 103 B. : 83 × 104 C. : 83 × 105 D. : 10,000 × 83 E. : 100,000 × 83
Answers
Answer:
Its D 10,000x83=830,000 and also its B because when you use the power of 10 exponents 83x10 and then the 4 on top that makes 830,000. Hope this helps!
Step-by-step explanation:
Which expression is equivalent to 6-(-8)?
Answers
Answer:
6 - (-8)
is 6 + 8
Step-by-step explanation:
A car is merging onto a freeway (beginning at rest), accelerating at a constant rate of 10ft/sec2. How long does it take to reach merging speed at 70mph?
Answers
Answer:
10.3secondsStep-by-step explanation:
Step one:
given data
acceleration,a= 10ft/sec^2
final velocity v= 70mph
first, let is convert mph to ft/sec
1mph is 1.46667 ft/sec
70 mph is x
cross multiply we have
x= 102.7ft/s
Step two:
we are using the first equation of motion
v=u+at
initial velocity u= 0m/s
102.7=0+10*t
102.7=10t
divide both sides by 10
t=10.3seconds
What is 8x-3x-10+6 simplified
Answers
Take out the liked terms (x)
8x-3x=5x
We’re left with 5x then you have a negative 10 and a positive 6
And it will give you 4
So answer
5x-4 :D
A rectangle has a perimeter of 80 inches and a width of 12 inches. Find the Length of the rectangle.
Answers
Answer:
28 inches
Step-by-step explanation:
p=2(l+w)
Answer:
length=28
Step-by-step explanation:
using the formula
P=2(l+w)
80= 2 (28+12)
solving for Length
L = P/2 - w = 80/2 - 12 +28 inches
hope that helps!! :)
Play made a recipe with 22 cups of liquid total 12 of which were fruit punch
Answers
Answer:
What is the question? I cannot see :(
Walter owns and operates a shop that sells stationery. During 2019, he used $4,000 of his inventory for his personal use. How much of that $4,000 may Walter deduct directly from the gross income of the business?
Answers
Answer: depends if its about a tax deductable he can if its from his buisness account
Step-by-step explanation:
Several years ago, a government agency reported the default rate (the proportion of borrowers who default on their loans) on a certain type of loan at 0.035. Set up the null and alternative hypotheses to determine if the default rate this year is less than 0.035.
What are the correct null and alternative hypotheses to test the claim that the default rate is less this year?
Answers
do you have a picture
Step-by-step explanation:
of the problem
What is the solution set to the equation (3x−9)(5x−3)=0?
{35,3}
{3}
{35,53}
{−3,−35}
Answers
Answer:
{ [tex]\frac{3}{5}[/tex], 3 }
Step-by-step explanation:
Given
(3x - 9)(5x - 3) = 0
Equate each factor to zero and solve for x
3x - 9 = 0 ( add 9 to both sides )
3x = 9 ( divide both sides by 3 )
x = 3
and
5x - 3 = 0 ( add 3 to both sides )
5x = 3 ( divide both sides by 5 )
x = [tex]\frac{3}{5}[/tex]
hOW MANY nibbles ARE IN ONE kilobyte?
Answers
Answer:
There are 2000 nibbles in 1 kilobyte
Step-by-step explanation:
Solve: 7 = x + 12
A) -19
B) -5
C) 4
D) 5
Answers
Answer:
-5
Step-by-step explanation:
its similar to 12-5=7 really simple
Keith bought n pack of pencils.Each pack has 12 pencils.Write an equation to represent the total number of pencils p that keith bought
Answers
Answer:
n÷12 pack of pencils
Step-by-step explanation:
SOME1 PLEASE HELP ME ITS IN PNG
Answers
Answer:
10
Step-by-step explanation:
y = 4x - 3
37 = 4x - 3
40 = 4x
x = 10
Answer:
10
Step-by-step explanation:
.....
Sarah and Jean were able to sell 4 dozen of cupcakes in a hour at a school fair if this rate continue how many dozen s of cupcakes well they be able to sell if the school fair 5 at 9:00 am and ends in 5:00 pm
Answers
Answer:
Step-by-step explanation:
Firstly,
We can tell by reading the question that they sell 48 cupcakes witch is 4 dozens every hour so if they continue to sell at that same rate then:
There are 8 hours between 9am and 5pm
∴ It is 48:1
That means 48 cupcakes per hour this is equation is a direct proportion so if any number increases so will the other
So if it is 48:1 then x:8 with be = 48x8
∴ Sarah and Jean will be able to sell 384 cupcakes
sub to cordae bizzell
Answers
Answer:
ok
Step-by-step explanation:
A letter is chosen at random from the word "ASSASSINATION". What is the probability that it is a vowel or a consonant?
Answers
Answer:
6/13 or 7/13
Step-by-step explanation:
There are 6 vowels in the given word
Probability (vowel) = 136
There are 7 consonants in the given word
Probability (consonant) = 137
Answer:
there is a 31.58 percent of probability.
or 6/13
Jackson's car was making a rumbling noise for 2 weeks. He decided to take it to the mechanic to get it checked out. To diagnose the problem, the mechanic tells Jackson that he charges a flat, one-time fee of $60 and then $35 for each hour he spends trying to identify the problem. What is the slope in this scenario?
Answers
Answer:
The slope is 35
Step-by-step explanation:
Given
[tex]One\ Time\ Fee = \$60[/tex]
[tex]Hourly\ Rate = \$35[/tex]
Required
Determine the slope
First, we need to determine the equation.
Let y represents the total charges and x represents the number of hours.
y is calculated using;
[tex]y = One\ Time\ Fee + Hourly\ Rate * x[/tex]
This gives:
[tex]y = 60 + 35* x[/tex]
[tex]y = 60 + 35x[/tex]
Reorder
[tex]y =35x + 60[/tex]
The general form of an equation is:
[tex]y =mx + b[/tex]
Where m represents the slope
By comparison of [tex]y =mx + b[/tex] and [tex]y =35x + 60[/tex]
[tex]m = 35[/tex]
Hence, the slope is 35