Answer:
x=6,y= 7
Step-by-step explanation:
-6x +7y= 13
-6x+8y=20
-y = -7
divide through by -1
y =7
sub y= 7 in equation 1
then x= 6
Keith bought a video game for $660. Amy only spent 1/3 of the cost on hers. How much did Amy spend on her video game system?
A)Choose expression you would use to solve:
1/3 (660)
660 - 1/3
660 ÷ 1/3
B) Simplify your expression from part A)
Make sure to show your work!!!!
Answer:
$220
Step-by-step explanation:
a.) 1/3 (660) = $220
b.)
1/3 = x/660
3x=660
x=660/3
x=220
if 1343243253254353462534543254324534234542345134 times 23423543254353454325234543543543254365645654654 minus 454235435435425243543=x what does x=
Answer:
3.14635164e91
Step-by-step explanation:
Make r the subject of the formula t=r/r-3
Answer:
[tex]r = \frac{3t}{t-1}[/tex]
Step-by-step explanation:
[tex]t = \frac{r}{r - 3}[/tex]
Cross multiply,
t(r - 3) = r
tr - 3t = r
tr = r + 3t
tr - r = 3t
r(t -1) = 3t
[tex]r = \frac{3t}{t-1}[/tex]
Answer:
r = 3t/(t - 1)
Step-by-step explanation:
t = r/(r - 3)
t(r - 3) = r
tr - 3t = r
tr = r + 3t
tr - r = 3t
r(t - 1) = 3t
r = 3t/(t - 1)
Which expressions are equivalent to the given expression
Answer:
7
Step-by-step explanation:
Answer:
(1)[ -3+2i-2(24)-8i ]
(2)[ -51-6i ]
Step-by-step explanation:
Throw the given equation into a calculator and simplify it. Answer #1 is simply a different/more complicated form of answer #2.
Triangle DEF has coordinates D(6, 4),
E(2, -1) and F (-3, 5), it is reflected across
the x-axis. What is the location of the new
coordinates?
Answer:
D = (6, -4)
E = (2, 1)
F = (-3, -5)
x-axis makes the y coordinate negative
Cellular phone service that charges per-minute will charge $20 for 140 minutes. How much would 1584 minutes cost?
Answer:
around $230
Step-by-step explanation:
(3.56 × 102) + (2.17 × 104) in scientific notation
Answer:
5.888 * 10^2
Step-by-step explanation:
3.56*102=363.12
2.17*104= 225.68
363.12+225.68= 588.8
7-5p+3q when p=1 and q=7
Answer:
23
Step-by-step explanation:
7 - 5p + 3q
p = 1, q = 7
Substitute in the values of "p" and "q", and solve;
7 - 5(1) + 3(7)
7 - 5 + 21
2 + 21
23
The endpoints of are A(2, 2) and B(3, 8). is dilated by a scale factor of 3.5 with the origin as the center of dilation to give image . What are the slope (m) and length of ? Use the distance formula to help you decide: .
A.
m = 21, A'B' = 3.5
B.
m = 6, A'B' =
C.
m = 6, A'B' = 3.5
D.
m = 21, A'B' =
Answer:
B
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
Elsa, Sven, Ana, and Jared are sharing a bowl with 50 kit-kat bars in it. Elsa took 0.14 of the bars for her family. Sven took 4 bars for himself. Ana took 24% of the total bars for her friends. Jared took the bars that were left. Who took the most bars? 5 points)
a
Elsa
b
Sven
c
Ana
d
Jared
Is f(x)=6x a direct variation
Answer:
[tex]f(x)=6x[/tex] is a direct variation.
Step-by-step explanation:
Given the function
[tex]f(x)=6x[/tex]
We have to determine whether the equation [tex]y=6x[/tex] is a direct variation or not.
As we know that in direction variation, y and x increase or decrease by the same factor by the formula
[tex]y=kx[/tex]
where 'k' is the constant of variation
Given the function
[tex]y=6x[/tex]
Here 6 is the constant of variation ∵ [tex]y=kx[/tex]
Also y and x increase and decrease by the same factor
For example,
when x=6, y = 6(x)=6(6)=36
when x=8, y = 6(x) = 6(8) = 48
Hence, when x increase, the y increases by the same factor.
Therefore, [tex]f(x)=6x[/tex] is a direct variation.
thank u, next by Arianna Grande is 3.5 minutes long. From beginning to end, there are 350
beats in the song. What is the beats per minute for the song?
Answer: 10
Step-by-step explanation:
Solve for m y-y=m(x-x)
Answer:
m = y/x
Step-by-step explanation:
y-y = m(x-x)
simplify:
-2y = m(-2x)
simplify again
-2y = -2mx
divide to get rid of -2 and x
-2y = -2mx
----------------
-2x
y
- = m
x
An apple tree is 93 ft tall and a peach tree is 5ft tall. How much taller is the
apple tree than the peach tree? help!!
(3m+13)+(4m+21) simplified
Answer:
(7m+34)
Step-by-step explanation:
Add like terms 3m+4m=7m, 13+21=34
You have to make sure to add like terms. In algebra, like terms are terms that have the same variables and powers. The coefficients do not need to match. Unlike terms are two or more terms that are not like terms, i.e. they do not have the same variables or powers. The order of the variables does not matter unless there is a power.
Find the simplified form of the expression. Give your answer in scientific notation.
(9x10^5)(6x10^-7)
9514 1404 393
Answer:
5.4×10^-1
Step-by-step explanation:
An adjustment in the exponent is needed to get to scientific notation at the end.
(9×10^5)(6×10^-7) = (0.9×10^6)(6×10^-7) = (0.9×6)×10^(6-7)
= 5.4×10^-1
_____
The applicable rule of exponents is ...
(a^b)(a^c) = a^(b+c)
_____
Of course, it can be useful to understand how moving the decimal point changes the exponent:
9 = 0.9×10 = 0.9×10^1
Find the slope of the line that passes through the points (8,3) and (5,5)
-2/3 is ur slopeeeee
Tatiana and her family are driving to
Florida. They traveled 204 miles in 3
hours. At this rate, how many miles
will they travel in 7 hours?
pls help me.
Answer: 476
Step-by-step explanation:
204 miles/3 hours = 68 miles
68 miles x 7 hours = 476 miles
Help me I’m on gradpoint I’m really confused!
Given h(x)=-x+5h, solve for x when h(x)=0.
Answer:
5
Step-by-step explanation:
Set h(x) to zero then solve:
0 = -x + 5
-5 = -x
5 = x
Answer:
x = 5
General Formulas and Concepts:
Pre-Alg
Order of Operations: BPEMDASEquality PropertiesStep-by-step explanation:
Step 1: Define
h(x) = -x + 5
h(x) = 0
Step 2: Solve
Substitute: 0 = -x + 5Isolate x term: -5 = -xIsolate x: 5 = xRewrite: x = 5Which is equivalent to 4 radical 9^1/2x
Answer: 9 1/8x
Step-by-step explanation:
use the word below to make a sentence
1.break
2.cricket
3.dry
4.frog
5.grass
6.prize
7.train
Answer:
The prize for the first one to brake that glass in the grass during a train moving will get a free VIP pass to the tourtament of cricket, also it will need to bring a towel to dry yourself in the pool included.
Answer:
1. I Will be taking a break from schoolwork today.
2. It is so quiet, I can hear crickets chirp.
3. The sun will soon dry up the puddles.
4. The frog hopped away when I ran towards it.
5. The sheep grazed on the grass.
6.The prize for the competition was $20.
7. I have to walk to campus because I missed the train.
Step-by-step explanation:
Also tag the question as English not math.
2.2 + 4y = 8
Y intercept
Find the total surface area of the
following square pyramid:
4 cm
6 cm
SA = [?] cm^2
Answer:
Lateral surface area= 48cm^2
Step-by-step explanation:
for anyone who needs the lateral surface area.
The total surface area of the square pyramid with a base side length of 6 cm and a slant height of 4 cm is 84 square centimeters.
We have,
Base side length (s) = 6 cm
Slant height (l) = 4 cm
Area of square = s²
Area of base = 6² = 36 cm²
A square pyramid has four triangular lateral faces with equal area.
The formula for the area of a triangle.
Area of triangle = 1/2 * base * height
Area of lateral surface of the triangle = 1/2 * 6 cm * 4 cm = 12 cm²
Total lateral area = 4 * 12 cm² = 48 cm²
Total surface area = Area of base + Total lateral area
Total surface area = 36 cm² + 48 cm²
Total surface area = 84 cm²
Therefore,
The total surface area of the square pyramid with a base side length of 6 cm and a slant height of 4 cm is 84 square centimeters.
Learn more about pyramid here:
https://brainly.com/question/17615619
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Please help 21points please
Answer:
y column
8
6
2
0
-3
Step-by-step explanation:
help with this pleaseeee
Using complete sentences, explain how to draw a double number line using the ratio value 1/3. Then, list at least three ratios that are equivalent to 1:3.
Answer:
Double number line is a diagram used when. quantities have different units.
It shows each of the quantities on its own number line with corresponding pairs of values lined up.The values of each number line are not the same unless there is a 1:1 ratio between them.
Step-by-step explanation:
Answer:
Double number line is a diagram used when. quantities have different unit
What is m∠C?
Enter your answer in the box.
m∠C=
°
A triangle labeled A B C. Side B C is the base, side A B is perpendicular, and side A C is the hypotenuse. Angle A is labeled x degrees, angle B is labeled 3 x degrees, and angle C is labeled 2 x degrees.
Answer:
60
Step-by-step explanation:
i took the test
The value of the variable 'x' is 30°. Then the measure of the angle ∠C will be 60°.
What is the triangle?The polygonal shape of a triangle has a number of sides and three independent variables. Angles in the triangle add up to 180°.
A triangle labeled A B C. Side BC is the base, side AB is perpendicular, and side AC is the hypotenuse. Angle A is labeled x degrees, angle B is labeled 3x degrees, and angle C is labeled 2x degrees.
Then the equation is given as,
x + 2x + 3x = 180°
6x = 180°
x = 30°
Then the measure of the angle ∠C is calculated as,
∠C = 2 × 30°
∠C = 60°
The value of the variable 'x' is 30°. Then the measure of the angle ∠C will be 60°.
More about the triangle link is given below.
https://brainly.com/question/25813512
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If one pint is the same amount as 2 cups, how many cups are in 6 pints?
Numerical Answers Expected!
Answer for Blank 1:
Answer:
12 cups
Step-by-step explanation:
cup 2:1 pint
cup 12:6 pint
the ratio stays the same
Answer:
the answe is 12 cups. You have 6 pints, each made of 2 cups, so you just need to multiply 6×2, which gets you 12 cups
What is the slope and y-intercept of the function represented by the table
slope =
y-intercept =