Answer:
Step-by-step explanation:
If you download Socratic it give u all the answers for free
Simplify 4.2(2x − 0.5y) − 2(4.1x − 0.3y)
The simplified form of the given expression is 0.2x-1.5y.
The given expression is 4.2(2x-0.5y)-2(4.1x-0.3y).
What is an expression?An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.
The given expression can be solved as follows
4.2(2x-0.5y)-2(4.1x-0.3y)
= 8.4x-2.1y-8.2x+0.6y
= 8.4x- 8.2x-2.1y+0.6y
= 0.2x-1.5y
Therefore, the simplified form of the given expression is 0.2x-1.5y.
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The following is the set of scores Ivy earned on her science tests. What is the mean of her test scores? 86, 94, 88, 82, 95
A. 86
B. 71
C. 85
D. 89 <------
Answer:
d
Step-by-step explanation:
add them all up then divide by 5
Write an algebraic expression for each verbal description:
The number of people who do NOT have brown hair
b= number of people WITH brown hair
Given h(x) = 4x – 4, find h(-3).
Answer:
h(-3)=-16
Step-by-step explanation:
here is the given function: h(x)=4x-4
h(-3) means to substitute the x in the function as -3
h(-3)=4(-3)-4
multiply
h(-3)=-12-4
combine
h(-3)=-16
so that means that h(-3)=-16
Hope this helps!
Which expression is equivalent to 3/32x8y10
Answer:
I think #2
Step-by-step explanation:
I need help pls. Thank you
2πr
2x22/7x2
4 x 22/7
88/7
=12.57142
Find the distance between the points (5, 2) and (1, -3). Round to the nearest tenth if necessary.
a. 3.0
b. 9.0
c. 5.2
d. 6.4
Answer:
d. 6.4
Step-by-step explanation:
d=√(1−5)2+(−3−2)2
d=√(−4)2+(−5)2
d=√16+25
d=√4–√1
d=6.403124
What is Thuy’s error?
Thuy should have written the ratio as StartFraction 30 inches over 3 inches EndFraction.
Thuy should have written the ratio as StartFraction 30 inches over 39 inches EndFraction.
Thuy should have divided both numbers by 6.
Thuy should have divided both numbers by 13.
Answer:
number b
Step-by-step explanation:
thuy should have written the ratio as 30/39
Find the product of 3 1/8 and 5/8 . Express your answer in simplest form.
Answer:
5
Step-by-step explanation:
3 1/8 : 8 x 3=25 new fraction
25/8 x 8/5 you have to do kcf Keep Change Flip
and then multiply
8x5=40 25x8=200 simply by 40
5/1= 5 hope it helped im not the best :)
You spent $34 for 8.5 gallons of gasoline. At
the same price per gallon, how many gallons
could you buy for $51?
Solve for x.
a. 16
b. 11
c. 6
-4(-6 + 2) =
A)-16
B)-32
C)-8
D)16
Step-by-step explanation:
[tex] - 4( - 6 + 2) [/tex]
[tex] - 4( - 4) = + 16[/tex]
Answer: A)-16
Step-by-step explanation:
x * 2/3 < 2/3
Solve for x
Answer:
x<1
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable. Hope this helps!
Answer:x<1
Step-by-step explanation:
A caterpillar moves across the grass at a rate of 4 2/3 feet every 7 minutes. How fast does the caterpillar move in feet per minute?
Given:
A caterpillar moves across the grass at a rate of [tex]4\dfrac{2}{3}[/tex] feet every 7 minutes.
To find:
The rate of moving caterpillar in feet per minute.
Solution:
We have,
Distance covered by caterpillar is 7 minutes = [tex]4\dfrac{2}{3}[/tex] feet
Distance covered by caterpillar is 1 minutes = [tex]\dfrac{4\dfrac{2}{3}}{7}[/tex] feet
= [tex]\dfrac{\dfrac{4(3)+2}{3}}{7}[/tex] feet
= [tex]\dfrac{14}{3\times 7}[/tex] feet
= [tex]\dfrac{2}{3}[/tex] feet
Therefore, caterpillar move [tex]\dfrac{2}{3}[/tex] feet per minute.
Please fill in the three leftover boxes
Paige plans to go to the fair with three of her
friends. She needs to earn at least $60 to
attend the fair. If Paige earns $7.50 per hour
babysitting, how many hours will she need to
work in order to have enough money to go to
the fair with her friends?
Answer:
how many hours will she need to work in order to have enough money to go to the fair with her friends? $60/$7.5/h = 8h
Step-by-step explanation:
Answer:
8 hours
Step-by-step explanation:
60=7.50x
60 will represent how much money she needs to earn.
x= number of hours Paige needs to work
[tex]\frac{60}{7.50} =\frac{7.50x}{7.50}[/tex]
[tex]x=8[/tex]
Paige needs to work 8 hours in order to have enough money to go to the fair with her friends.
Plssssssssssssssssss help!!
What transformations occur in the following function?
[tex]f(x)=5^{x-3}+2[/tex]
a.) right 3, up 2
b.) left 3, down 2
c.) left 3, up 2
d.) right 3, down 2
Answer:
its b
Step-by-step explanation:
Just plain math. I was on this question
Will mark brainliest, if correct.
Answer:
Maybe M' (3, -2)
Step-by-step explanation:
Please help me ASAP. ( and actually try and not just type something random)
Answer:
i think shell pay 24$ between 3 and 4pm
and an additional $12
Step-by-step explanation:
sorry if this is wrong:(
i need help pleaseee
screen shot attatched
Answer:
1,200 cubic cm
Step-by-step explanation:
First, you separate it into two prisms, which gives you two different volume formulas.
14*20*2 = 560
20*4*8 = 640
You then add the two volumes together, which equals 1,200
Answer:
sorry wish i could help....
Step-by-step explanation:
The Thomas' backyard pool is
rectangular in shape and is
similar to the rectangle formed
by their fenced backyard. The
backyard measures 12 feet long
and 9 feet wide. If the width of
the pool is 6 feet wide, what is
the length of the pool?
Answer: 8 feet
Step-by-step explanation:
Factor the expression completely. 54 – 24x
Answer:
6(9-4x)
Step-by-step explanation:
Factor 6 out of 54-24x, or group and factor out the GCF. Hope this helps!
2 sides of a triangle have measures of 5 inches and 11 inches which measure could be the length of the third side
Answer:
the third side must be greater than 6 but less than 16
Step-by-step explanation:
use triangle inequality theorem - 3 scenarios (one of which is discounted because it produces a negative and a side of a triangle cannot be negative)
5 + 11 > 3rd side (n) n < 16
5 + n > 11 n > 6
11 + n > 5; n > -6 discounted
a baker needs 3/5 cup of water 2/3 cup flour using this ratio how much flour is needed for 1/3 cup water?
10/27 cup
3/10 cup
2/15 cup
1/36 cup
Answer:
10/27 cups
Step-by-step explanation:
y = how much flour is needed
set up proportion of water to flour equals water to flour
[tex]\frac{3/5}{2/3}[/tex] = [tex]\frac{1/3}{y}[/tex]
cross-multiply: 3/5 y = 2/9
multiply each side by the reciprocal of 3/5
5/3 · (3/5)y = 2/9 · (5/3)
y = 10/27
Answer: 10/27 cups flour.
Step-by-step explanation:
Compare fractions 3/5 and 1/3:
[tex]\dfrac{3}{5}=\dfrac{3 \times 3}{5 \times 3} =\dfrac{9}{15} \\\\ \dfrac{1}{3}=\dfrac{1 \times 5}{3 \times 5} =\dfrac{3}{15}\\\\\dfrac{3}{15} < \dfrac{9}{15}[/tex]
1/3 is less than 3/5 because 3/15 is less than 9/15.
Find how many times 1/3 is less than 3/5:
[tex]\dfrac{3}{5} \div \dfrac{1}{3} =\dfrac{3}{5} \times \dfrac{3}{1}=\dfrac{9}{5}[/tex]
This means that flour should also be taken 9/5 times less:
[tex]\dfrac{2}{3} \div \dfrac{9}{5} =\dfrac{2}{3} \times \dfrac{5}{9} =\dfrac{10}{27}[/tex]
Find the area of the figure. Use 3.14 for it.
2 ft.
8 ft
3 ft
4 ft
3 ft
8 ft
The area of the figure is I
ft.
Answer:
0.5 X 2 X 3 = 3
0.5 X 3 X 3 = 4.5
8 X 4 = 32
32 + 4.5 + 3 = 39.5 square ft
factories:
y(x+y)-(1+x)
Answer:
[tex](y - 1)(x + y + 1)[/tex]
Step-by-step explanation:
[tex]y(x + y) - 1(1 + x)[/tex]
Lets expand it.
[tex] = > xy + {y}^{2} - x - 1[/tex]
Lets re-arrange it.
[tex] = > xy - x + {y}^{2} - 1[/tex]
Lets split [tex] {y}^{2} - 1[/tex]
So,
[tex] = > x(y - 1) + (y + 1)(y - 1)[/tex]
[tex] = > (y - 1)(x + y + 1)[/tex]
Answer:
hope it helps you have a great day keep smiling be happy stay safe
Alicia, Quentin, and Rosalyn are siblings. Alicia is the oldest sibling. Quentin is four years younger than Alicia. Rosalyn is two years older than Quentin. The sum of the siblings’ ages, in years, is 48. How old is Alicia?
Answer:
Alicia is 18years
Quentin is 14years
Rosalyn is 16years
Step-by-step explanation:
Let the age of Alicia be x
Let the age of Quentin be y
Let the age of Rosalyn be z
If the sum of the siblings’ ages, in years, is 48 then;
x+y+z = 48.... 1
If Rosalyn is two years older than Quentin then;
z =y+2 ..... 2
Also if Quentin is four years younger than Alicia then;
y = x-4 ... 3
From 3:
x = y+4 ... 4
Substitute 2 and 4 into 1 to have:
y+4+y+y+2 = 48
3y + 6= 48
3y = 48-6
3y= 42
y = 14
Since x= y+4
x = 14+4
x = 18
Since z = y+2
z = 14+2
z = 16year
This means that;
Alicia is 18years
Quentin is 14years
Rosalyn is 16years
can someone help me asap please
Answer:
Here you go. It is really easy. All you have to do is translate the points. If it says translate 3 units up, you'd pick a point, and move it up 3 units. Then do it with all the others and BOOM! You did it! Try one of the problems yourself to make sure you understand what to do next time.
Have a nice day!
To find the quotient 3/4 / 1/8
Answer:
6 i think
Step-by-step explanation:
Answer:
24/4 or 6
Step-by-step explanation:
3/4 / 1/8
flip the 1/8 and the sign
3/4x8/1
3x8=24
4x1=4
last one i need help with
Answer: 10 sq units
Step-by-step explanation:
3 + 4.5 + 0.5 + 2 = 10 sq units