y = x + 9
3x + 8y = -5
PLEASE SHOW WORK!!!
Due TODAY!!!!!
Answer:
x=-45/11
y=10/11
Step-by-step explanation:
y = x + 9 eq 1
3x + 8y = -5 eq 2
Re arranging eq 1
x-y=-9
Now multiply eq 1 with 8
8x-8y=-40 now call as eq 3
Add eq 2 and 3
3x+8y=-5
8x-8y=-40
11x=-45
x=-45/11
put value of x in eq 2 for y
3(-45/11)+8y=-5
-135/11+8y=-5
8y=-5+135/11
8y=(-55+135)/11
8y=80/11
y=(80/11)*(1/8)
y=10/11
Check
3*(-45/11)+8*(10/11)=-5
-135/11+80/11=-5
(-135+80)/11=-5
-55/11 =-5
-5=-5
Please answer this quick!!
Karen paid $62 for pair of shoes. Three days later she noticed the shoes were on sale for $50. What was the percent of change
Answer:
24%
Step-by-step explanation: c:
URGENT!!!!
In a class of students, the following data table summarizes how many students have a
brother or a sister. What is the probability that a student chosen randomly from the
class has a sister?
Answer: 5/30 chance of it happening
Step-by-step explanation:
The probability is 5/30 chance of it happening.
We have given that,
In a class of students, the following data table summarizes how many students have a brother or a sister.
We have to determine the probability that a student chosen randomly from the class has a sister.
What is the formula for probability?The probability is the ratio of the number of favorable outcomes to the total outcomes in that sample space. It is expressed as, Probability of an event P(E) = (Number of favorable outcomes) ÷ (Sample space).
Therefore the probability is 5/30 chance of it happening.
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Bianca bought a pack of rechargeable batteries for
$9.99. If the sales tax on the batteries is 3% and Bianca
pays with $11 cash, how much change will she get back?
Answer:
$0.71
Step-by-step explanation:
Find the cost with sales tax
9.99(1.03)
= 10.29
Subtract this from 11
11 - 10.29
= 0.71
So, Bianca will get $0.71 back in change
Answer: 0.71 cents
Step-by-step explanation:
9.99x0.03=0.2997
9.99+0.2997=10.2897 rounds to 10.29
11-10.29=0.71
Solve the system: 10x-9y=8 21y+15x=0.5
PLEASE HELP NEED ASAP
Answer:
x = 1/2
y = -1/3
Step-by-step explanation:
10x - 9y = 8 (Multiply by 3)
15x + 21y = 0.5 (Multiply by -2)
30x - 27y = 24
-30x - 42y = -1
-69y = 23
y = -1/3
10x - 9y = 8
10x - 9(-1/3) = 8
10x + 3 = 8
10x = 5
x = 1/2
The table represents equivalent ratios of x to y. Find the missing numbers in the table.
Х
y
15
20
16
25
o
30
24
At a fundraiser, Marco's class sold 75% of their 80 baked
goods. How many baked goods did they sell?
Answer:
60
Step-by-step explanation:
They sold 60 baked goods because 75% of 80 is equal to 60.
Answer:
60 baked goods
Step-by-step explanation:
To find the answer to this question, you will need to multiply 80 by 75%.
Now this is very simple.
Some calculators will actually give you the option to multiply by a percent. Just type 80×75% and you'll get 60.
There is another way to do this.
You could also just solve 80×.75 due to the fact that .75 is equal to 75%.
Brainliest please
What is a fraction? What does it represent? Give an example.
FIRST TO AWNSER CORRECTLY GETS BRAINLIEST
Answer:
a fraction is a numerical quantity that is not a while number; aswell as a small ot tiny part, amount, or proportion of something. fractions represent equal parts of a whole or a collection. example of a fraction: 1/4, 1/2, 1/25, ect.
please help, due today!
Find the length of the radius of the circle.
a. r = 3 d. r = 5
b. r = 4 e. r = 6
c. r = 4.5
Answer:
D) r=5
Step-by-step explanation:
Any triangle formed with one side of the triangle being the diameter of the circle it’s inscribed in will be a right triangle.
6²+8²=c²
36+64=c²
100=c²
√100=c
c=10
So the diameter is 10. That makes the radius 5.
write 3^n/9^(n-1) as a power of 3
At Tasty Dogs, 2 of the last 12 customers wanted mustard on their hot dogs. Considering this data, how many of the next 6 customers would you expect to want mustard?
We can expect only 1 customer that would want mustard.
What is probability?Probability denotes the possibility of the outcome of any random event. The meaning of this term is to check the extent to which any event is likely to happen.
Given that, 2 of the last 12 customers wanted mustard on their hot dogs, we need to determine the number of customers would expect to want mustard,
So,
6 x 2 / 12
= 12/12
= 1
Hence, we can expect only 1 customer that would want mustard.
Learn more about probabilities, click;
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yo can someone pls help me with this i’ve been crying for the last hour bc i can’t figure it out and it’s due in 30 minutes. the question is “find the area and perimeter to this composite figure”. i will give you the most brainly if you answer and solve. thank you <3
9514 1404 393
Answer:
area: 524 cm²perimeter: 124.8 cmStep-by-step explanation:
The rectangle in the middle has a width equal to the radius of the semicircular ends, so (20 cm)/2 = 10 cm.
The semicircular ends, together, make a complete circle of radius 10 cm.
The area is the sum of the areas of the parts:
A = LW = (21 cm)(10 cm) = 210 cm² . . . . . . rectangle area
A = πr² = π(10 cm)² = 100π cm² ≈ 314 cm² . . . . . circle area
The total area is ...
210 cm² +314 cm² = 524 cm² . . . . area of the figure
__
The perimeter of the figure is the sum of the lengths of all of the edges. From the left, working clockwise, we have ...
P = (1/2 circle of diameter 20) + (rectangle top = 21) +(1/2 circle of diameter 20) +(circle radius = 10) +(rectangle bottom = 21) +(circle radius = 10)
The two 1/2 circles add to a whole circle with a circumference of ...
C = πd = (3.14)(20 cm) = 62.8 cm
Then the whole perimeter is ...
P = 62.8 cm + 21 cm + 10 cm + 21 cm + 10 cm = 124.8 cm
_____
Note that we have used 3.14 for pi. If you use a more exact value, your answers will be slightly different.
HELP ASAP ILL GIVE BRAINLESS PLEASE HELP
Question 16 (Fill-In-The-Blank Worth 1 points)
(07.04 LC)
The solution to 15x = 30 is x=_- (Only input the number.)
Numerical Answers Expected!
Answer for Blank 1.
Answer:
X = 2
Step-by-step explanation:
15X = 30
so
X = 30/15
X = 2
Answer:
The correct answer is x=2, so enter a "2" in the box. Hope this helps!
Find the area of the polygon with E(-3,2), F(1,5), G(5,-1), H(1,-5).
Someone please help having a lot of trouble with this question :....( thanks.
Answer:
40
Step-by-step explanation:
-3 2
-15 - 2 = -17
1 5
-1 - 25 = -26
5 -1
-25 - (-1) = - 24
1 -5
2 - 15 = -13
-3 2
area = |-17 - 26 - 24 - 13|/2 = |-80|/2 = 80/2 = 40
Answer: 40
Find the area of the following
trapezoid:
8 cm
5 cm
4 cm
16 cm
A = [?] cm2
Answer: A=48
Step-by-step explanation:
Which of the following lists of fractions are in order from least to greatest? Select TWO that apply.
A.
1/4 2/3 3/10
B.
3/5 7/10 5/6
C.
2/5 5/8 3/4
D.
3/8 9/10 7/12
HELP
Answer:
i think its a 1/4 then 2/3 and 3/10
A lamp points toward the base of a doorway as shown below, what is the height, in feet, of the lamp
Answer: [tex]40\sqrt{3}[/tex]
Step-by-step explanation:
30-60-90 triangle- leg opposite 30 is x, leg opposite 60 is [tex]x\sqrt{3}[/tex] and the hyp. is 2x
we need to figure out X
we also know that the leg opposite 60 is = 120
[tex]120=x\sqrt{3}[/tex]
square everything
[tex]14400=3x^{2}\\4800=x^{2} \\\sqrt{4800} =x\\\sqrt{1600*3} =x\\40\sqrt{3} =x[/tex]
What is the least amount of green ooze any one contestant carried?
Answer:
Step-by-step explanation:
Hey there. In the comments above, let's list these fractions and convert them into decimals for a more simple comprehension level:
0; 1/8; 3/8; 1/2; 5/8; 3/4; 7/8; and 1. The converted list below will correspond with these fractions in order:
0; 0.125; 0.375; 0.5; 0.625; 0.75; 0.875; and 1.00.
Looking at these decimals, 1.00 is the greatest amount as it is the only fraction that converted to a whole number.
pls help me giving brainless.
Answer:
five and three ninths
six and seven tenths
nine and one fifth
6>w/-2 solve the inequalities
Answer:
w>-12
Step-by-step explanation:
6>w/-2 (Given)
6>-w/2 (Rewrite)
12>-w (Multiply both sides by 2)
-12<w (Remember to flip the sign when dividing or mulitplying by a negative)
w>-12 (Rewrite with w in front)
Therefore, w>-12 is the solution to the inequality.
Answer:
w>-12
Step-by-step explanation:
First, you you need to get rid of the -2 in w/-2 by multiplying -2 by both sides like this.
(-2)6>w/-2(-2)
Then you simplify it like this:
-12>w
However, since you multiplied/divided with a negative, you switch the inequality sign like this:
w>-12
And that's the answer!
Which is more, 45 dimes or 450 pennies?
Answer:
they are equal
Step-by-step explanation:
1 dime is equal to 10 pennies
so 45x10 = 450
450=450
Answer:
They are equal 45 dimes is equivalent to 450 pennies.
Step-by-step explanation:
I'm smart.
Jake ran a full marathons of 26 miles. His average speed was 6 miles per hour. About how long did it take him to cross the finish line?
Answer:
Step-by-step explanation:
273m
Plz answer this I will give brainliest
Answer:
C
Step-by-step explanation:
A=6a²=6·6.5²=253.5
You roll a pair of six-sided number cubes, numbered 1 through 6. What is the probability of rolling two odd numbers? (Enter your probability as a fraction
Answer:
1/4 or 25%
Step-by-step explanation:
The probability for rolling an odd number is 50% or [tex]\frac{1}{2}[/tex] because there are 3 odd numbers, (1, 3, 5) and 6 total outcomes (1, 2, 3, 4, 5, 6). [tex]\frac{3}{6} =\frac{1}{2}[/tex]
The probability for rolling two odd numbers in a row is
[tex]\frac{1}{2} *\frac{1}{2} =\frac{1}{4}[/tex]
So, the probability of rolling an odd number twice is 25% or [tex]\frac{1}{4}[/tex].
5.6(x - 3) = -0.4x + 19.2
Answer:
Step-by-step explanation:
Answer:
this is the answer hope it helps
The radius is 15 cm what is the area
Answer:
A = 225 π c m [tex]x^{2}[/tex]
Step-by-step explanation:
the area of a circle formula with radius
A = π r[tex]x^{2}[/tex]
in this case
A = π × 15[tex]x^{2}[/tex]
A = 225 π c m[tex]x^{2}[/tex]
Answer:
Step-by-step explanation:
Area of a circle = π r² you are given the r radius = 15cm
area = π 15² cm
do this for me? helppp all my point
Answer:
do u want me to find the perimeter? area? or volume?
GIVE BRAINLIEST. Select the correct answer.
What is the value of x in the figure?
X
40°
70°
O A.
40°
O B.
70°
O C.
80°
OD
120°
O E.
150°
Answer:
E. 150°
Step-by-step explanation:
By exterior angle theorem:
[tex]x = 40 \degree + (70 - 180) \degree \\ x= 40 \degree + 110 \degree\\ x= 150 \degree[/tex]
What is the measure of each angle of a regular 26-gon?
Answer:
Angle of Regular polygon = 166.15° (Approx.)
Step-by-step explanation:
Given:
Regular polygon with 26 sides
Find:
Measure of each angle of Regular polygon
Computation:
Angle of Regular polygon = [(n-2)180] / n
where n = number of sides
Angle of Regular polygon = [(26-2)180] / 26
Angle of Regular polygon = [(24)180] / 26
Angle of Regular polygon = [4,320] / 26
Angle of Regular polygon = 166.15° (Approx.)