Answers
After substitution in the first equation :
7x + x +21 = -19
= 8x + 21 = -19
by subtracting 21 :
8x = -19 - 21
8x = -40
by dividing over 8 :
x = -5
after substitution in the second equation :
2y = -5 + 21
2y = 16
by dividing over 2 :
y = 8
pls give me brainliest
Related Questions
Which two whole numbers does 27/4 lie between?
Answers
Answer:
6 and 7
Step-by-step explanation:
27 divided by 4 equals 6.75 and that number is in between 6 and 7
The sale price of every item in a store is 65% of its usual price. The usual price of a tennis racket is $70, what is its sale price?
Answers
Answer: 24.50$
Step-by-step explanation:
In the expression -5g12 which part is the base?
Answers
one half of a number is eight
Answers
Answer:
16
Step-by-step explanation:
What is the answer of 14.8-4b-(17.1-3b)
the answer choices are:
A. 0.375
B. 3.75
C. 37.5
D. 375
Answers
Hi. I need help with this question :
Question : y is such that
[tex]4y - 7 \leqslant 3y[/tex] and
[tex]3y \leqslant 5y + 8[/tex]:
I). What range of values satisfies both inequalities ?
II). Hence, express
[tex]4y - 7 \leqslant 3y \leqslant 5y + 8[/tex]
in the form of
[tex]a \leqslant y \leqslant b[/tex]
where a and b are both integers.
Please show workings.
Answers
Answer:
-4≤y≤7
Step-by-step explanation:
4y-3y≤7
y≤7
and
3y-5y≤8
-2y≤8
y≥-4
so, -4≤y≤7
9514 1404 393
Answer:
-4 ≤ y ≤ 7
Step-by-step explanation:
Solve the inequalities separately, then identify the intersection of the solution sets.
4y -7 ≤ 3y
y -7 ≤ 0 . . . . . . . subtract 3y
y ≤ 7 . . . . . . . . . add 7
3y ≤ 5y +8
0 ≤ 2y +8 . . . . . . subtract 3y
-8 ≤ 2y . . . . . . . . . subtract 8
-4 ≤ y . . . . . . . . . . divide by 2
The intersection of the sets y ≤ 7 and -4 ≤ y is given by ...
-4 ≤ y ≤ 7
-) Colin is playing a video game. He wins 25 points for each gold coin he finds. His goal is to win
more than 200 points. He wants to know how many gold coins he needs to find.
) Let g be the number of gold coins Colin finds. Which inequality represents the situation?
259 > 200
259 > 200
25 +9 > 200
25+ 9 > 200
Answers
Answer:
A
Step-by-step explanation:
25g>200
so A
if my answer helps please mark as brainliest.
There are 5 cats for every 4 dogs at the animal shelter. What is the ratio of dogs to cats?
Answers
Answer:
4:5
Step-by-step explanation:
Answer:
puedo cambiarme de entidad en el règimen subsidiado
Step-by-step explanation:
which table of values can be defined by the function y =6x - 2?
Answers
i need help with this question too! :(
Answer:
the answer is A
Step-by-step explanation:
The first term of an arithmetic sequence is a1 = 2, and the third term is a3 = 6. Which of the following could be formula(s) for the sequence? Select all that apply.
A. an = 2n
B. an = 2n + 2
C. an = n + 2
D. an = an − 1 + 2; a1 = 2
Answers
Answer:
A
Step-by-step explanation:
an=2(1)=2
an=2(3)=6
help meee pleaseeeeee
Answers
Answer:
5[tex]\sqrt{7}[/tex]
Step-by-step explanation:
Answer:
No ablo inglés.......
Step-by-step explanation:
ajaja
What is it guys?????????
Answers
Answer:C
Step-by-step explanation:
Notice that the line is heading downward. This is a clue that it has a negative slope. Think of slope as rise over run. Rise being up or down on the y axis and run being left or right on the x axis. If we start at (0,0) and count down 3 squares and left 4 squares we can see that -3/4 is the slope.
Answer:
A. 3/4
Step-by-step explanation:
m = [tex]\frac{y2 - y1}{x2 - x1}[/tex]
(-8, -6) (-4, -3)
[tex]\frac{-3 + 6}{-4 + 8} = \frac{3}{4}[/tex]
Jeff can type 110 words in 2 3/4 minutes. How many words can he type
in 4 1/4 minutes? *
Answers
Answer:
680
Step-by-step explanation:
What we should know is how many words he can type in 1/4 minutes. We can do 110 divided by 2.75 which is 40. 40 is the number of words he can type in 1/4 minutes. Now multiply this 17 (4 1/4 = 17/4) and you get 680. I believe he can type 680 words in 4 1/2 minutes. (Make sure my answer is correct)
plssss help giving brainly
Answers
Answer:
-2 and 4
Step-by-step explanation:
not 100% sure but i think so
Answer: 4 + -6 = -2
Explanation: it’s technically 4-6 which also equals -2
what's the difference between two step equations and one step equations
Answers
When solving two step equations you must solve one part of the equation so that you can solve the second part.
In one step equations you can just solve the equation as is.
Answer:
A one step equation needs one step, and a two step equation needs two steps.
Step-by-step explanation:
A family owns two cars. One car gets 35 miles per gallon and the other car gets 27 miles per gallon. In one week the family drove a total of 480 miles and used 16 gallons of gas. Can you determine the number of miles the family drove each car? Can you explain
Answers
Answer:
the 35 gallon used 6 gallons of gas while the 27 mile car used 10.
Step-by-step explanation:
35 x 6 = 210
27 x 10= 270
270 + 210 = 480
4(-W +8) I need help please.
Answers
Answer:
4(-w+8)
Step-by-step explanation:
-4w+32
32dividedby-4
w=-8
Which of the following is most likely the next step in the series?
Answers
Answer:
its either A, or B
Step-by-step explanation:
hehehhe
Answer:
B
Step-by-step explanation:
The numbers in each of the circle halves are all in the blue side therefore all numbers on the red side would be eliminated. Leaving you with the options of B or C.
Now the Blue side for every pair is facing each other. So C would be eliminated because the red side is facing the start of the second pair ( A.K.A the third circle)
Leaving us with B.
I apologies if this is wrong! But I hope I helped a little bit
Look at the graph.
On a coordinate plane, a graph increases through (negative 1, 4), levels off at (0, negative 3), and then increases up through (2, 5).
Leslie analyzed the graph to determine if the function it represents is linear or non-linear. First she found three points on the graph to be (–1, –4), (0, -3), and (2, 5). Next, she determined the rate of change between the points (–1, –4) and (0, -3) to be StartFraction negative 3 minus (negative 4) Over 0 minus (negative 1) EndFraction = StartFraction 1 Over 1 EndFraction = 1. and the rate of change between the points (0, -3) and (2, 5) to be StartFraction 5 minus (negative 3) Over 2 minus 0 EndFraction = StartFraction 8 Over 2 EndFraction = 4. Finally, she concluded that since the rate of change is not constant, the function must be linear. Why is Leslie wrong?
The points (–1, –4), (0, –3), and (2, 5) are not all on the graph.
The expressions StartFraction negative 3 minus (negative 4) Over 0 minus (negative 1) EndFraction and StartFraction negative 3 minus (negative 5) Over 2 minus 0 EndFraction both equal 1.
She miscalculated the rates of change.
Her conclusion is wrong. If the rate of change is not constant, then the function cannot be linear.
Answers
Answerpizza:
Step-by-step explanation:
Which of the following transformations will always produce a congruent figure?
A. reflection
B. dilation
C. expansion
D. contraction
Which of the following transformations will produce a similar, but not congruent figure?
A. dilation
B. translation
C. reflection
D. rotation
Answers
Answer:
A, d
Step-by-step explanation:
A) reflection, A) dilation
Step-by-step explanation:
To produce a congruent figure, the angle measures of the image and the side lengths of the image must be the same as the angle measures and side lengths of the pre-image. This means we cannot shrink, expand, or contract the figure; by definition, those transformations change the size. This leaves reflection.
To produce a similar, but no congruent figure, we must change the side lengths while keeping the angle measures preserved. Translations, reflections and rotations will move a figure but do not change the side lengths; dilation is the only choice that will change the side lengths.
Estimate the sale price of the item.
30% off a bike for $432.43
Answers
Answer:
129.73
Step-by-step explanation:
432.43x30%=129.73
Discount = 432.43 × 30/100
Discount = 432.43 x 0.3
You save = $129.73
Final Price = Original Price - Discount
Final Price = 432.43 - 129.729
Final Price = $302.70
Determine the intercepts of the line.
y-intercept:
X -intercept:
Answers
Y-intercept=2.5
bro THIS GIVIN ME A HEADACHEEEEEEE. help pls LOL
Answers
HELPPPPPPPPPPPPPPP PLZZZZZZZZZZZZZz
Answers
Answer:
basically a calculator
Step-by-step explanation:
COME HERE IF U KNOW HOW TO ROUND
Round to the nearest one:
850,265.2
Answers
Answer:
850265
Step-by-step explanation:
Gianah lives in Milton. She bought a bus ticket to travel to her cousin's house in Orlando. She gets on the bus in Mobile. The distance between the two cities is 300 kilometers and the bus drives 70 kilometers per hour. If the bus is 30 kilometers away from Orlando.
Answers
Answer: A. 300 - 70h = 30
Step-by-step explanation:
Rest of the question is:
Which of these following equations represents the hours, h, the bus has travelled.
The driver is going at 70 kilometers per hour meaning that for every hour that passes, 70km has been traveled. Expression to find the distance travelled given hours is:
= 70h
There are 300km between the two cities and 30km are left in the journey. Expression is therefore:
300 - 70h = 30
This shows that when you find the distance travelled so far and deduct it from 300, you will get 30km.
The equation that can represent the distance for which the bus has travelled is 300-70h=30.
What is Speed?The speed can be defined as the rate of change of position of an object with respect to time. It is given by the formula,
[tex]\rm{Speed = \dfrac{Distance}{Time}[/tex]
The distance travelled by bus is 270 kilometers (300-30), because the distance left between the bus and Orlando is 30 kilometers. while the speed of the bus is 70 kmph.
Let the time for which the bus travelled be h, therefore, the equation that can represent the hours for which the bus has travelled is,
Total distance - distance covered in h hours = distance left between bus and Orlando
[tex]300-70h=30[/tex]
Thus, the equation that can represent the distance for which the bus has travelled is 300-70h=30.
Learn more about Speed:
https://brainly.com/question/15100898
Can someone help me please
Answers
Step-by-step explanation: 70
The Pep Club sold $125 worth of candy at Friday's night game. if they receive a commission of 40% of their candy sales, how much did they make?
Answers
Answer:
50$
Step-by-step explanation:
Answer:
$175
Step-by-step explanation:
If by commission you mean the money they add to the candy bars revenue then the formula for that would be 125 * 1.4 = x. x = 175.
in a recent survey 60% of those surveyed indicated that they preffered walking to running. a.if 540 people preffered walking how many people were surveyed?? b.how many people preferred running??
Answers
Answer:
216 person
Step-by-step explanation:
100-60=40%
540×40/100=216 person
10 candy bars for 12.50 how much per candy bar unit price
Answers
Answer:
1.25
Step-by-step explanation:
