Answer:
[tex](x+1)(x-2)[/tex]
Step-by-step explanation:
You can factor this by grouping.
[tex]x^2-x-2[/tex]
[tex]\left(x^2+x\right)+\left(-2x-2\right)[/tex]
[tex]x\left(x+1\right)-2\left(x+1\right)[/tex]
[tex]\left(x+1\right)\left(x-2\right)[/tex]
5x +7 y=-17
4x – 3y = -5
Substitute.
Answer:
(x,y) = (-2, -1)
Step-by-step explanation:
We start off by substituting the value of "x".
5x+7y=-17
x=-[tex]\frac{5}{4} + \frac{3}{4}y[/tex]
We then solve 5[tex]5(-\frac{5}{4}+\frac{3}{4}y ) +7y= -17[/tex]
y=-1 *Substitute the value of "y"
x= -[tex]-\frac{5}{4}+\frac{3}{4}x(-1)[/tex]
x=-2
[tex]\left \{ {{-17=-17} \atop {-5=-5}} \right.[/tex] This works.
Can someone help me solve this fast??
Answer:
[tex]x=7[/tex]
Step-by-step explanation:
[tex]\sqrt{3x+8}=\sqrt{4x+1}[/tex]
Square both sides:
[tex](\sqrt{3x+8})^{2} =(\sqrt{4x+1})^{2}[/tex]
[tex]3x+8=4x+1[/tex]
Subtract 8 from both sides:
[tex]3x+8-8=4x+1-8[/tex]
[tex]3x=4x-7[/tex]
Subtract 4x from both sides:
[tex]3x-4x=4x-7-4x[/tex]
[tex]-x=-7[/tex]
Divide both sides by -1:
[tex]\frac{-x}{-1}=\frac{-7}{-1}[/tex]
[tex]x=7[/tex]
Points A, B, and C are on line AC. A horizontal line has points A, B, C. A line extends from point B up and to the left to point D. Angle D B C is 140 degrees. Angle CBD has a measure of 140°. What is the measure of angle ABD?
a. 40°
b. 50°
c. 60°
d. 70°
Answer:40 degrees
Step-by-step explanation:
Answer
A. 40° on e2020
Kim poured a 24-ounce container of orange juice into 5 cups. She
poured the same amount of juice into each cup. Which rational
number represents the amount of juice in each cup?
5
24
24
5
O 5
What is the probability of a spinner stopping on Y?
Answer:
Step-by-step explanation:
1/8.
There is. One Y and 8 choices
Look at the following numbers: −3, −1, 0, 3 Which pair of numbers has a sum of 0?
Answer:
-3 and 3
Step-by-step explanation:
this is because if u switch em around its 3 - 3 which equals to 0. also because they are opposites on the number scale
How should the lines y = -5/4x - 5 and y = x - 10 be described?
a)parallel
b)perpendicular
c)intersecting
Answer:
The answer is: B.
Step-by-step explanation:
They are prependicular
:)
Seven more than twice a number is 7
Answer:
0
Step-by-step explanation:
0 × , or 0² is 0, and 0 + 7 is 7. Hope this helps!
Given h(x) = 3x - 3, find h(3).
Answer:
6.
Step-by-step explanation:
h(x) = 3x - 3
h(3) = 3 * 3 - 3 = 9 - 3 = 6.
Hope this helps!
Is the table discrete or continuous
Blue berries are d dollars a pound . Lin buys q pounds of blueberries and pays t dollars
Answer:
There is no known answer
Step-by-step explanation:
It has to have at least 1 number for someone to figure out the problem. D = ? Q = ? and T = ? so the answer is ? Unknown.
I REALLY NEED ANSWERS NOW!!
1. Gerry and Jane okay a trivia game. Gerry's score is -17 and Jane's score is -24. What is the difference between Gerry's score and Jane's score
Answer:
7
Step-by-step explanation:
24-17= 7
therefore
the difference between -17 &-24 is also 7
Consider the these two linear equations:
10x + 5y = 90
y = ax + 18
What value of a will make the two lines parallel?
Answer:
a = -2
Step-by-step explanation:
The first equation can be rewritten in slope-intercept form:
5y = -10x +90
y = -2x +18
The value a=-2 will make the second line identical to the first.
for a certain online store, the distribution of number per hour is approximately normal with mean 1200 purchases and standard deviation 200 purchases. for what proportion of hours will the number of purchases at the online store exceed 1400?
a)5%
b)68%
c)16%
d)32%
Answer: 16%
Step-by-step explanation:
When we have a normal distribution, the 100% of our sample will be placed in a "gaussian bell".
Where the middle of this bell coincides with the mean.
The mean, in this case, is 1200, and the standard deviation is 200.
In the image below you can see that between the points.
Mean + standard deviation and the end of the graph, we have:
13.5% + 2.35% + 0.15% = 16%
And particularly, if we want to know the percentage that exceed 1400, will be the same percentage above the mean plus the standard deviation.
mean = 1200
SD = 200
mean + standard deviation = 1200 + 200 = 1400.
Then the percentage that exceeds 1400 is equal to the percentage that we found above, then the correct option is C: 16%
THIS IS DUE SOON PLEASE GIVE ME A HAND!! THANK YOU
Answer:
only one solulton and its 7
Step-by-step explanation:
x=7/2,y=7
HELP ME SOLVE!!! I'm horrible with fractions :(
Francis did this work to solve an equation. Did he make an error?
3x = 10 - 2x
-2x
-2x
x = 10
Answer:
Yes he did. The error is that you are supposed to add 2x to 3x to get 5x. So 5x = 10, x = 2
Step-by-step explanation:
Karla will walk her bike at a speed of 6 mile/hour from her house to the bike
shop, which is 2.5 mi from her house, to get the bike fixed. She expects to
wait 30 min for the repair. Then she will return home by riding her bike at a
speed of 15 miles/hour. How long will the entire trip last? *
A. 1.30 hours
B. 1.50 hours
C. 0.50 hour
D. 1.08 hours
Answer:
D. 1.08 hours
Step-by-step explanation:
Speed = distance / time
Going to the bike shop
speed = 6 mile/hour
Distance = 2.5 mi
Time = t
Speed = distance / time
6 = 2.5 / t
Cross product
6t = 2.5
Divide both sides by 6
t = 2.5/6
= 0.417 hour
She waited for 30 minutes for the repair, that is 0.5 hour
Going back home
Speed = 15 miles/hour
Distance = 2.5 mi
Time = t
Speed = distance / time
15 = 2.5 / t
Cross product
15t = 2.5
Divide both sides by 15
t = 2.5 / 15
= 0.167 hour
Total time of the entire trip =
0.417 hour + 0.5 hour + 0.167 hour
= 1.084 hour
Approximately 1.08 hour
The correct answer is D. 1.08 hours
I need a response thank u if u help me
Answer:
A, B, & C
Step-by-step explanation:
A) More students play soccer for 2/4 of an hour than any other amount of time. TRUE
B) More students play soccer for 1 hour than for 0 hours. TRUE
C) 8 students play soccer for 2/4 of an hour or more. TRUE
D) The least common response was 0 hours. FALSE
E) 4 students play soccer for 1/4 of an hour. FALSE
A bowling alley charges $8 for shoes and $3 per game Claire brought $20 what inequality describes this
Answer:
20 > 8+3g
Step-by-step explanation:
The ratio 5:3 and 10:3 are equivalent ratios.
is 30:18 equivalent to these ratios above?
Answer:
5:3 and 10:3 are NOT equivalent ratios.
10:3 and 30:18 are NOT equivalent
5:3 and 30:18 ARE equivalent
Step-by-step explanation:
The m∠P is three less than twice the measure of ∠Q. If ∠P and ∠Q are supplementary angles, find the measures of both angles.
Answer:
m∠P =119
m∠Q = 61
Step-by-step explanation:
m∠P = 2(∠Q)-3 or p=2(q)-3
supplementary angles so they combine to equal 180!
soooooo we can take
q+p=180
input what p equals and you get
q+ 2(q)-3=180
3q-3=180
3q=183
q=61
now we have what m∠Q is, so just subtract that from 180 to get m∠P
180-61=119
help? Anyone? plzz??
Answer:
12 to the 5th Power!
Step-by-step explanation:
Add 5+7 and you will get 12. then add the 5th power! so you will get 12 to the 5th power!
Hope it helps!
OwO
Answer:
12 to the fifth power
Step-by-step explanation:
WILL MARK YOU BRAINLIEST JUST GIVE THE ANSWER!!
Answer :
Step-by-step explanation:
its the second option
Mrs. Wheeler is finishing a craft and needs a piece of yarn that is 5.4 feet long. If Mrs. Wheeler has 54 inches of yarn, she __________. A. has enough yarn because 54 inches is 18 feet of yarn B. has enough yarn because 54 inches is 5.4 feet C. does not have enough yarn because 54 inches is 0.54 feet of yarn D. does not have enough yarn because 54 inches is 4.5 feet of yarn
Answer:
D
Step-by-step explanation:
ello
-_-
Paco's daughter will be participating in an upcoming dance recital. She will require a
different costume for each dance she plans to performs.
C = the number of costumes Paco's daughter will require
d = the number of dances Paco's daughter plans to perform
Which of the variables is independent?
Answer: The answer would be D, The number of dances paco's daughter plans to perform.
Step-by-step explanation:
IM GIVING 31 POINTS AND YOU WILL GET ALL IF YOU ANSWE AND WHEN I PICK YOU AS BRAINLIEST
Juanita is converting 7 meters to inches. Will the number of inches be less than or greater than 7? choose one of these answers below
The number of inches will be less than 7 because 7 is a small number.
The number of inches will be greater than 7 because 7 is a small number.
The number of inches will be less than 7 because inches are smaller than meters.
The number of inches will be greater than 7 because inches are smaller than meters.
Answer:
The number of inches will be greater than 7 because inches are smaller than meters.
Step-by-step explanation:
Step-by-step explanation:
1 inch is around 2.54cm, which is a lot less than 1 meter.
Since inches are a smaller unit than meters, the number of inches will be greater than 7 to have the same equivalent length.
"The number of inches will be greater than 7 because inches are smaller than meters" is correct.
How old was Sarah x years ago if she is now 23?
Answer:
23 - x
Is that all there is to the problem?
Answer:
23 - x
Step-by-step explanation:
suer easy answer orth alot of pions for you
10x-3=-5x-18
(10x-3=15x-18)
X = -1
Hey there!
[tex]Answer:\boxed{x=-1}[/tex]
[tex]Explanation:[/tex]
10x - 3 = -5x - 18
10x - 3 + 5x = -5x - 18 + 5x Add 5x to both sides
15 - 3 = -18
15x - 3 + 3 = -18 + 3 Add 3 to both sides
15x = -15
15x/15 = -15/15
x = -1
Hope this helps!
The width of a rectangle is 5 feet less than the length. The perimeter is 62. Find the length and width of the rectangle.
Variables: ___________________________
Model equation: ______________________________
Length of the rectangle: ______________________________
Width of the rectangle: ______________________________
Perimeter formula: p = 2(w + l)
The perimeter is 62.
p = 62
The width of a rectangle is 5 feet less than the length.
w = l - 5
Substitute and solve.
62 = 2[(l - 5) + l)]
62 = 2l + 2l - 10
62 = 4l - 10
72 = 4l
18 = l
Substitute and solve for the width
w = 18 - 5
w = 13
Therefore, the length is 18 and the width is 13.
Best of Luck!
Answer:
see below and attached.
Step-by-step explanation:
Perimeter (P) = 2 L (Length) + 2 W (Width)
where P = 62
W = L - 5
P = 2L + 2W
62 = 2L + 2(L -5)
62 = 2L + 2L - 10
72 = 4L
L = 72/4
L = 18
W = L - 5
W = 18 - 5
W = 15
Variables : P, L, W
Model equation: P = 2L + 2W
Length of the rectangle: 18
Width of the rectangle: 13
