Answer:
a. 1
b. -5
c. -9
d. -2
e. 11
Step-by-step explanation:
a. -7 = 3a-10
-7+10 = 3a
3 = 3a
a = 1
b. 2a+13 = 3
2a = 3-13
2a = -10
a = -10/2
a = -5
c. -5a+14 = 59
-5a = 59-14
-5a = 45
-a = 9
a = -9
d. -23 = 4a-15
-23+15 = 4a
-8 = 4a
-2 = a
a = -2
e. -90 = 9-9a
-90-9 = -9a
-99 = -9a
-99/-9 = a
11 = a
a = 11
If Josh can read 18 pages in 40 minutes, how long will it take him to read 90 pages?
Answer:
18=40
90? 40×90=3600÷18=200 pages.
Answer:
It will take him 200 minutes to read 90 pages.
Step-by-step explanation:
Josh can read 18 pages in 40 minutes.
Ratio of pages to minutes = 18 : 40
Number of pages to read = 90
Minutes = x
Ratio of pages to minutes = 90 : x
The relationship is proportional
18 : 40 :: 90 : x
Product of extremes = Product of means
18x = 40*90
18x = 3600
Dividing both sides by 18
[tex]\frac{18x}{18}=\frac{3600}{18}[/tex]
x = 200
Therefore,
It will take him 200 minutes to read 90 pages.
(Solving 1 Step Equations)
You make a profit of $0.75 for every bracelet you sell. Write and solve an equation to determine how many bracelets you must sell to earn enough money to buy soccer cleats that cost $36.
Answer:
48
Step-by-step explanation:
Answer:
48 bracelets
Step-by-step explanation:
What is 6 3/4 divided by 2 5/8?
Conversion a mixed number 6 3/4 to a improper fraction: 6 3/4 = 6 3/4 = 6 · 4 + 3/4 = 24 + 3/4 = 27/4.
To find new numerator:
Multiply the whole number 6 by the denominator 4. Whole number 6 equally 6 * 4/4 = 24/4
Add the answer from previous step 24 to the numerator 3. New numerator is 24 + 3 = 27
Write a previous answer (new numerator 27) over the denominator 4.
Six and three quarters is twenty-seven quarters
Conversion a mixed number 2 5/8
to a improper fraction: 2 5/8 = 2 5/8 = 2 · 8 + 5/8 = 16 + 5/8 = 21/8
To find new numerator:
Multiply the whole number 2 by the denominator 8. Whole number 2 equally 2 * 8/8 = 16/8
Add the answer from previous step 16 to the numerator 5. New numerator is 16 + 5 = 21.
Write a previous answer (new numerator 21) over the denominator 8.
Two and five eighths is twenty-one eighths
Divide: 27/4 : 21/8 = 27/4 · 8/21 = 27 · 8/4 · 21 = 216/84 = 12 · 18 /12 · 7 = 18/7
Dividing two fractions is the same as multiplying the first fraction by the reciprocal value of the second fraction. The first sub-step is to find the reciprocal (reverse the numerator and denominator, reciprocal of 21/
8 is 8/21) of the second fraction. Next, multiply the two numerators. Then, multiply the two denominators. In the next intermediate step , cancel by a common factor of 12 gives 18/7.
In words - twenty-seven quarters divided by twenty-one eighths = eighteen sevenths.
The solution of the expression [tex]6 \dfrac{3}{4}[/tex] divided by [tex]2 \dfrac{5}{8}[/tex] , which are in mixed fraction is [tex]\dfrac{18}{7}[/tex]
A collection of constants, variables connected using one or more arithmetic operator is called an expression.
The combination of a whole number and a proper fraction is called as mixed fraction.
The following expression can be simplified as:
Here, both the fraction are converted into improper fraction as[tex]\dfrac{27}{4}[/tex] and, [tex]\dfrac{21}{8}[/tex]
Now, the following expression is simplified as:
[tex]\dfrac{\dfrac{27}{4}}{\dfrac{21}{8}}[/tex],
Reciprocal the expression, so that the division sign changes to multiplication.
[tex]\dfrac{27}{4} \times \dfrac{8}{21}[/tex]
Thus, the solution will be [tex]\dfrac{18}{7}[/tex].
Learn more about expressions here :
https://brainly.com/question/28170201
#SPJ6
PLEASE HELP WILL GIVE BRAINLIEST AND MY NUMBER
Use the fraction models to solve the subtraction equation.
Five fraction models, the first four are completely shaded, and the last one is partitioned into six equal parts with four parts shaded. Below is the equation four and four sixths minus one and one third equals blank line.
three and two sixths
three and three sixths
three and three thirds
five and five ninths
7x(x+1.8)=0
Please find x!
Answer:
x = 0, -1.8
I hope that helps
Solve the equation 3= d+2
Step-by-step explanation:
d=1
.................
HELP QUICK PLS FAST!!!!!!!!!
Answer:
it would be 90
Step-by-step explanation:
The scale is 1:6. that means that the object is 6 times larger then the scale drawing.
help me I need help please help I am stalling the 20 words or more help help help please please
Is 6.787887888...
a rational number
PLSS HELP ASAP
1000+61-100x60-1000000( 134x89)=
:D
-11926004939
Hope I helped
I wanna finish this hw but I don't know how to do it pls teach me
brainly is now my favorite thing
Answer:
y 16
Step-by-step explanation:
needs halp wit dis uuuuhhhhhhh question, hhhhhhhhhhh i hate math-
Given:
3x(x - 2) + 2 and 2x² + 3x -12
If x = 7 then,
= 3(7)(7 - 2) + 2
= 21(5) + 2
= 107
= 2(7)² + 3(7) -12
= 2(49) + 21 -12
= 98 + 9
= 107
For x = 7, each expression has a value of 107.
If x = 2 then,
= 3(2)(2 - 2) + 2
= 6(0) + 2
= 2
= 2(2)² + 3(2) -12
= 2(4) + 6 -12
= 8 - 6
= 2
For x = 2, each expression has a value of 2.
These results suggests that the expressions are equivalent, but (I don't know the choices) the expressions are equivalent.
Help as soon as you can :d
Use the Distributive Property to simplify the expression.
9(2n+1) =
Answer:
18n+9
Step-by-step explanation:
9(2n+1)
multiply 9 with 2n
9 x 2n = 18n
multiply 9 with 1
9 x 1 = 9
18n+9
I FREEking need help on this! You will get some POINTS for it ∵
What do you need help on? All I see is a y axis and x axis grid.
I some help with these two questions because I'm not good at math LOL and don't put something random for the points
Answer:
1)2,790,000,000
Step-by-step explanation:
Find the volume of the triangular prism below:
Answer:
62.5
Step-by-step explanation:
PLEASE only respond if you know this answer. This is my third time asking this but everyone responded wrong. I already know what A B and C are I just need initial value and rate of change! Good answers will get a brainliest.
Help Me Please! Will Give Brainliest for the first person who is correct!!
Answer:
= 1/4
Step-by-step explanation:
1/4
Decimal form: 0.25
A school has 158 computers. They want each of the 6 grades to have the same number of computers. How many computers should each grade receive? Explain.
Answer:
158/6=26.3333333333333333333333333333333333333334
Step-by-step explanation:
so u just divide how many computers they have whith how many grade levels that they have. and round up the numbers.
number 16 guys!!! please help!
Answer:
The answer is yes
pls pls pls pls pls helpppp meee
Answer:
27x+5+x
Step-by-step explanation:
Answer:
36x + 45
Step-by-step explanation:
hope this helps
I just need 1 more reason for the black text. Thanks!
Answer:
1: proportion means 2 ratio are equivalent
2: its also known as constant of proportionality
Step-by-step explanation:
give me brainlist pls
PLS HELP PLS HELP PLS HELP
Answer:are u suppose to divide something
Step-by-step explanation:
Sophie pays m dollars to rent a car for the weekend. On the drive home, she buys $25 worth of gasoline. Her friend Melody pays for one-half the cost of the car rental only. Choose an expression you could use to determine how much Sophie spent.
A. m + 25
B. m + 25 –1/2
C. 1/2(m + 25)
D. 1/2m + 25
Answer:
D
Step-by-step explanation:
please answer right ill give brainliest don't submit a wrong answer if u just want the points comment and ill help u get a lot more points just don't submit a wrong answer pleasee
Answer:
top left The prices throughout the year of the items in a store
Step-by-step explanation:
all the others are represented by functions
*make me brainlist plssssssssss*
Write the equation of the line in Point-Slope form that goes through the point (10,5) and has a slope of -3
Group of answer choices
y=-3x+35
y+5=-3(x+10)
y-5=-3(x-10)
y=-3x-35
Write in slope intercept form
5x - 3y = -9
Group of answer choices
y = (5/3)x + 9
y = (5/3)x - 3
y = (3/5)x + 3
y = (5/3)x + 3
Which equation is perpendicular to:
y = 3/2x +2
Group of answer choices
y = 3/2x +3
y = -2/3x +5
y = -3/2x +4
y = 2/3x +7
Which equation is parallel to:
y = -2x +2
Group of answer choices
y = 1/2x +7
y = -2x +5
y = -1/2x +3
y = 2x +6
I want to say thank for helping me
Answer:
y = -1/2x +3
Step-by-step explanation:
ye i think so.
Jake's mom is making peanut butter cookies with chocolate chips. In her first batch, she used the ratio of 2:2 for the number of ups of chocolate chips to the number of cups of peanut butter chips. In her second batch, she used a ratio of 3:1 for the number of cups of chocolate chips to the number of cups of peanut butter chips and made the same number of cookies as the first batch. Jake made the following tape diagrams for his mom to reference. If her first batch used 4 cups of peanut butter chips, how many cups of chocolate chips did Jake's mom use for the second batch?
please help me ill mark brainliest
Answer:
its C and 4.7x10 -5 was right
Step-by-step explanation:
26 points Help me 7th-grade work
Answer(s):
- p + (3p-5) + (4p+6)
(I cant really tell if there's another answer sorry, but i know this one is correct.)
The graph shows the distance Mila drove during the first 10 minutes of her drive to work one morning. MILA'S DRIVING SPEED 7 OD Distance (in mlles) 5 4 3 IN www M WAR ON 5 6 7 8 9 10 Time (in minutes) What was Mila's average speed, in miles per minutes, during the first 5 minutes of her drive? 0.83 01.00 00.20
This is the chart for your question .