Answer: x= -2 y= -4
substitute the given values of x into the equation 3x+3y=-18
y substitute the given value of y into the equation x=2y
since all the equalities are true the ordered pair is the solution of the system
Mango mixed 24 ounces of blue paint with 16 ounces of red paint to create a new purple color. In order to create 72 more ounces of this exact purple color, how many ounces of red paint would she need
Answer: 28.8 ounces of red paint
Step-by-step explanation:
The total amount of paint created the first time Mango mixed colors was:
= 24 + 16
= 40 ounces of purple color
For 40 ounces of purple, 16 ounces of red was needed. Proportion is therefore:
= 16/40
If one wants 72 ounces of purple therefore:
= Proportion of red used * 72 ounces
= 16/40 * 72
= 28.8 ounces of red paint
Amanda and Carly have the same percentage of green marbles in their bags of marbles. Amanda has 4 green marbles and 16 total marbles. Carly has 10 green marbles. How many of Carly's marbles are NOT green?
Answer:
30
Step-by-step explanation:
They both have the same percentage of green marbles, Amanda has 16 total marbles, 4 of them are green. So 25 percent of her marbles are green. If 25 percent of Amandas marbles are green, 25 % of Carlys marbles are green too. Carly has 10 green marbles, if 10 is 25 percent of the total amount then the total amount if 40, minus 10 from 40 because we only want the non green ones and the answer is 30. :)
What is the inverse (opposite) of subtraction?
Answer: Addition I think
A farmer sells 9.4 kilograms of pears and apples at the farmer's market. 2 5 of this weight is pears, and the rest is apples. How many kilograms of apples did she sell at the farmer's market?
Answer: 6.9 kg
Step-by-step explanation:
Given
The combined weight of apple and pears is 9.4 kg
If pears weigh 2.5 kg
The weight of apples is the subtraction of pears weight from the total
[tex]\Rightarrow 9.4-2.5=6.9\ kg[/tex]
Thus, the farmer sells 6.9 kg of apples
A circle has a radius of 10 cm. Student tried to find the area of a sector in the circle where the radii formed a 60° angle. Explain two errors the student made.
Answer:
First the student used the formula for circumference instead of area. Then, the student should have written 60/360, not 60/100, because there are 360 degrees in a circle.
Step-by-step explanation:
Answer:
Sample response: First the student used the formula for circumference instead of area. Then, the student should have written 60/360, not 60/100, because there are 360 degrees in a circle.
Step-by-step explanation: Have a nice day<3
HELP ASAP I GUVE BRAINLIEST
Answer:
i think it would be figure c but i could be wrong
Which point represents 2 3/4 on the number line?
Answer:
e
Step-by-step explanation:
Use the polygon below to find the value of x.
How many square feet of outdoor carpet will we need for this hole?
Answer:
42 sq ft
Step-by-step explanation:
First, I will do the small triangle on the right.
2 x 3 = 6
6/2 = 3 sq ft
Next the large rectangle.
11 x 3 = 33 sq ft
Next the large triangle on the left.
3 x (11-7)
3 x 4 = 12
12/2 = 6 sq ft
Add them all together.
6 + 33 + 3 = 42
sorry if im wrong <3
Six friends each drank 2/3 cup of juice (If a bottle of juice contains 3 cups, how many bottles of juice were needed?)
Answer:
2
Step-by-step explanation:
3 cups = 1 bottle
only 6 ppl so 3 cups + 3 cups = 6
Answer:
1 1/3. If you need to round up for how much they had, 2.
Step-by-step explanation:
12/3=4 cups. thats 1 bottle plus 1 cup
hope it helped!
Please Help These two!
Thank you
Answer:
7. there are 30 pounds per box
8. $1.89 per notebook
Step-by-step explanation:
can someone help please?
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Kyree paid $10 for a pizza he now has $46.how much money did he have before buying the pizza ??
46 + 10 = 56
He had $56Answer:
56 Dollars
Step-by-step explanation:
iIf you add the two 10 plus 46 you will get 56 Subtract 10 you will get 46. It might not make sense a little but this is always how id my math.
Dillon peeled 40 pounds of potatoes. How many ounces of potatoes did Dillon peel?
Answer:
640
Step-by-step explanation:
40 pounds = 640 ounces
The ounces of potatoes that Dillon peeled is 640 ounces.
What is Unit Conversion?Unit conversion is defined as expressing the same quantity by different measurement units.
For example, a distance of 20 meter can be also expressed as 2000 cm. The distance is same.
Given that,
Amount of potatoes that Dillon peeled = 40 pounds
We have to convert the same amount of potatoes in to the measurement unit of ounces.
We have to convert the unit.
We have the measurement unit that,
1 pound = 16 ounces
40 pounds = 40 × 16 = 640 ounces
Hence 640 ounces of potatoes did Dillon peel.
Learn more about Unit Conversion here :
https://brainly.com/question/4736731
#SPJ3
Triangle RST and its image, triangle R’S’T’, are graphed on the coordinate grid below.
Which rotation, using the origin as the center of rotation, transformed RST to R’S’T’?
A. a 90° clockwise rotation
B. a 90° counterclockwise rotation
C. a 45° clockwise rotation
D. a 45° counterclockwise rotation
Answer:
B. a 90º counterclockwise rotation
Step-by-step explanation:
You can tell that it moves 90º and it moves in a counterclockwise direction because from RST to R’S’T’ it moves left to right. That is counterclockwise when you look it up.
Hope this helps!!! :)))))
Emily has a box shaped like a rectangular prism that is full of sugar cubes. • Each sugar cube has a volume of 1 cubic centimeter. • The top layer has a width of 6 cm and a length of 11 cm. • There are 3 layers of sugar cubes.How many sugar cubes are in the box?
Answer:
Step-by-step explanation:
Simplify the expression
6 − 2 x + 5 + 4 x
Answer: 2x+11
Step-by-step explanation: hope this helps!
Answer:
2 x + 11
Step-by-step explanation:
6 − 2 x + 5 + 4 x
= 6 + − 2 x + 5 + 4 x
Combine Like Terms:
= 6 + − 2 x + 5 + 4 x
= ( − 2 x + 4 x ) + ( 6 + 5 )
= 2 x + 11
write each expression in simplest form
12c - c =
Answer:
11c
Step-by-step explanation:
12c-c=11c
It would look like this without the variable (just to make it easier to understand)
12-1=11
1. Simplify:
50r2-20r
- 10r
A. -5r + 2
B. -5r-2
C. 5r2 +2
Answer:50r2−30r
Step-by-step explanation:
got it of the web.
To find the sales tax on an item, divide the price of the item by 20.
a. Write an algebraic expression to find the sales tax on an item that costs d dollars.
b. Use your expression to find the sales tax on a television that costs $800.
Answer:
1) d/20,
2) 40
Step-by-step explanation:
the first question just wants you to divide d/20. If a television costs $800, divide it by 20, and get 40
Find the length of a side of a square if its area is 4/25 cm^2. *
Answer:
The length of a side of the square will b 2/5 cm.
Step-by-step explanation:
To find the area of a 2d object, you need to multiply length and width together. Since it's a square, all the sides are the same length, so that makes it easier. We need to find the square root of 4 and 25. [tex]\sqrt{4}[/tex] is 2, and [tex]\sqrt{25}[/tex] is 5.
Now we need to multiply 2/5 by itself to check. 2/5 x 2/5 = 0.16, or 4/25. The answer is correct. The final result is 2/5. Hope this helped!! :]
The area of a square is the square of one of its side lengths. The length of a side of the square is 2/5 cm
Given:
[tex]Area = \frac{4}{25}cm^2[/tex]
Shape: Square
The area of a square is:
[tex]Area = Length^2[/tex]
So, we have:
[tex]Length^2 = \frac 4{25}cm^2[/tex]
Take positive square roots of both sides
[tex]Length = \sqrt{\frac 4{25}cm^2}[/tex]
[tex]Length = \frac 2{5}cm[/tex]
Hence, the length of the square where the area is [tex]\frac 4{25}cm^2[/tex] is [tex]\frac 2{5}cm[/tex]
Read more about lengths of a square at:
https://brainly.com/question/2042017
Find the missing side length to the nearest tenth of a millimeter. Enter your answer in the box.
About ___ mm
Answer:
missing side = 4.7 mm
Step-by-step explanation:
using the Pythagorean theorem:
7² - 5.2² = x²
49 -27.04 = x²
x² = 21.96
x = 4.69
What is the value of x in the diagram below?
Pls help me if your great at math I’ll mark brainliest <3 (if correct)
Answer:
I believe it's B
Hope this helped<3
The graphs of functions f and g are shown. Which statements are evidence that function g is the inverse of function f?
Answer:
It is C and D
Step-by-step explanation:
Find the distance between the two points rounding to the nearest tenth (if necessary).
(−1,−2) and (5,2)
Answer:
7.2 units
Step-by-step explanation:
To find the distance between these two points, we want to use the distance formula: d = √[(x₂ - x₁)² + (y₂ - y₁)²]
Plug in the given values of (-1, -2) & (5, 2)
d = √[(x₂ - x₁)² + (y₂ - y₁)²]
d = √[(5 - (-1))² + (2 - (-2))²]
Simplify the parentheses.
d = √[(5 + 1)² + (2 + 2)²]
d = √[(6)² + (4)²]
Simplify the exponents.
d = √[36 + 16]
Add.
d = √[52]
Evaluate the radical.
2√13 or 7.2111
Round the decimal.
7.2 units
Hope this helps!
Please help with this question it is 60% of my grade.
Answer: b
Step-by-step explanation:
you start with 0 min- equals 24
1 min- 21
2 min- 18
3 min- 15
4 min- 12
5 min- 9
and so on- you look for the table that best describes that. x represents the minutes, and y represent the amount of water left in the sink.
Answer:
B
Step-by-step explanation:
After the first minute it should be at 21, because it would be reduced by 3. Second, the same. ETC
please help
Due really soon
Answer:
i believe that would be B
Miranda conducted a survey on how many hours per day students spend surfing the internet versus how many pets they have
She surveyed ten of her classmates and recorded the data in the scatter plot below.
Answer:
Option C
Step-by-step explanation:
Data set collected by Miranda and her classmates is,
(0, 7.5), (0, 9), (1, 6), (1, 6.5), (2, 6), (3, 5.5), (4, 4), (4, 4.5), (5, 4), (8, 3)
By using a regression calculator.
Equation for the regression lien will be,
y = -0.6565x + 7.438
y = -0.7x + 7.4
Option C will be the answer.
You need 3 sticks of butter for every 24 cookies you bake.
Complete the table using equivalent ratios.
3. 24
16
5. 32
Step-by-step explanation:
3 sticks of butter make 24 cookies
which means we multiplied 3 by 8
then we devide 16 cookies by 8 which is 2 (as you did)
therefore 5 multiplied by 8 equals 40