Answer:
x=13
Step-by-step explanation:
9x+15+3x+9=180
12x+24=180
12x=156
x=13
Answer:
x=13
Step-by-step explanation:
(3x+9)+(9=180
12x+24=180
12x=156
x=13
hi I need help pls explain
x=81
Step-by-step explanation:
[tex] → \sf \frac{65 + 73 + 76 + x}{4} = 73.75 \\ [/tex]
[tex]→ \sf65 + 73 + 76 + x = 295 \\[/tex]
[tex]→ \sf x = 81[/tex]
Solve the equation 52 = 7+5(c+3)?
Answer:
c = 6
Step-by-step explanation:
52 = 7 + 5(c = 3)
52 = 7 + 5c + 15
52 = 22 + 5c
-5c = 22 - 52
-5c = -30
c = [tex]\frac{-30}{-5}[/tex]
c = 6
Can a prime number be a multiple of any number except itself?
What percent of 7.5 is 40?
Answer: 18.75.
Step-by-step explanation:
Which equation describes the line above?
A. y= -4x-5
B. y= -1/5x-4
C. y= -5x-4
D. y= -4x-1/5
Answer:
y = -1/5x -4
Step-by-step explanation:
We know the y intercept is -4 since it crosses the y axis at -4
The slope is negative since it goes down from left to right
Take two points on the line
(0,-4) and (5,-5)
We can find the slope using the slope formula
m = ( y2-y1)/(x2-x1)
= ( -5- -4)/( 5 -0)
= (-5+4)/ ( 5-0)
= -1/5
The equation for the line in slope intercept form is y = mx+b where m is the slope and b is the y intercept
y = -1/5x -4
52 cents is what tax rate of $8.00?
Answer:
it would be 6.5% tax the reason i know this is becuase its the same tax rate thats in my state :) glad i could help
Step-by-step explanation:
Divide 1440g in the raito 1:7
Answer:
206 is the answer
Step-by-step explanation:
Like and give 5 star rating
Find the area of the figure shown. Round your answer to the hundredths place. Use 3.14 for pi.
A worker at a cabinet shop is cutting out pieces of wood for a dresser. He needs pieces that are 4 1/4inches long. Each saw cut wastes 1/8 inch of wood. The board he has is 7 feet long. How many pieces can he make from this board?
Answer: he will be able to make 19 full pieces
Step-by-step explanation:
1. Start off by making 7 feet into 84 inches so the measurements can match.
2. Add 4/14 inches and the 1/8 a inch together so you know how much is being taken off 84 inches. The amount will be 35/8 inches.
3. Divide 84 inches by 35/8 inches = 19 1/5
4. The whole number of the answer will be how many boards you can make from the board.
nancy hopes to collect 100 oysters from the ocean.she has collected 15% of her goal so far.how many dose she have?
Answer:
15
Step-by-step explanation:
.15/100
what is 5 1/4 divided by 3/4
Answer:
7
Step-by-step explanation:
Answer: the answer is 7
Step-by-step explanation:
The distance between two cities on a map is 7.5 centimeters. The map uses a scale in which 1 centimeter represents 15 kilometers. What is the actual distance between these two cities in kilometers?
Multiply total centimeters by kilometers per centimeters
7.5 x 15 = 112.5
Answer: 112.5 kilometers
Answer:
112.5 kilometers between the 2 cities
Step-by-step explanation:
sounds fake but in miles its 69.9
HELP WILL REWARD BRAINLIEST!!
What is the value of x which proves that the runways are parallel? What is the measure of the larger angle?
Answer:
118°
Step-by-step explanation:
When two parallel lines are cut by a tranversal, then the exterior angles are supplimentary and the corresponding angles are congruent.
Therefore the angle above (15x - 17)° is also (5x + 17)° and the angle below (5x + 17)° is also (15x - 17)°.
Angles on a straight line adds up to 180°. So to know the measure of the larger angle we must both equations and equal it to 180° to find x in order to know the larger angle.
(5x + 17) + (15x - 17) = 180
5x + 15x + 17 - 17 = 180
20x = 180
20x/20 = 180/20
x = 9°
Nkw let's substitute x = 9 into the equations
5x + 17 =
5(9) + 17 =
= 62°
15x - 17 =
15(9) - 17 =
= 118°
Both equations should add up to be 180°.
Therefore the measure of the largest angle is 118°.
Simplify: (2x2 − 5x + 7) + (5x2 − 3) + (x2 − x + 11)
Answer:
8x^2-6x+15
Step-by-step explanation:
Step-by-step explanation:
8x^2-6x!15. that's the answer
Can someone help me so. With this ?
Answer:
A: Nine weeks and one day
Answer:
9 weeks and 3 days
Step-by-step explanation:
22 x 3 = 66
66 divided by 7 (days in the week) = 9.42 (9 = weeks)
9 x 7 = 63
66-63 = 3 (days)
Hi could anyone help me with this question of standard deviation/mean
Answer: 1 every 6 times thrown
Step-by-step explanation:
Co
How much of a radioactive kind of ruthenium will be left after 8 hours if you start with 3,888
grams and the half-life is 4 hours?
grams
Submit
Answer:
Step-by-step explanation:
As an example, iodine-131 is a radioisotope with a half-life of 8 days. It decays by beta particle emission into xenon-131. After eight days have passed, half of the atoms of any sample of iodine-131 will have decayed, and the sample will now be 50% iodine-131 and 50% xenon-131.
50 grams to 25 grams is one half-life. 25 grams to 12.5 grams is another half-life. So, for 50 grams to decay to 12.5 grams, two half-lives, which would take 36 days total, would need to pass. This means each half-life for element X is 18 days.
Answer:
After 8 hours or 2 half-lives, you will have 972 grams of ruthenium left.
Step-by-step explanation:
hope this helps. . . <3
Some school students are raising money for a charity. Their goal is to raise $1000. They already have $232 from bake sales. To raise the remainder, they are planning a walk-a-thon. If each person walking raises $24, how many walkers will the students need to reach their goal?
Answer:
It will be needed 32 walking students to reach the goal
Step-by-step explanation:
1000 - 232
768/24= 32
Answer:
32 walkers.
Step-by-step explanation:
$1000 minus the $232 we have already raised from the bake sale to determine the amount we need to raise from the walk-a-thon.
1000 - 232 = 768.
So in order to raise 768, and we are raising $24 per person we will divide to figure out how many people we need.
768 / 24 = 32.
You can check this answer by multiplying 24 and 32, and then adding the 232 to the product.
24 x 32 = 768
768 + 232 = 1000
How do i solve +i for algebra 2 ?
Answer:
i = sqrt(-1)
Step-by-step explanation:
positive i would probably be undefined as well, and just positive sqrt(-1)
4^(3x-2)=20
Solve for x
Answer:
x = 4.2/3
Step-by-step explanation:
Make each denominator rational. In other words, rationalize the denominator.
Please please help! Thank you:)))
Answer:
[tex]= 1 - \frac{\sqrt{11} }{11}[/tex]
Step-by-step explanation:
[tex]\frac{\sqrt{11} -1}{\sqrt{11}}[/tex]
= [tex]\frac{\sqrt{11} -1}{\sqrt{11} } (\frac{\sqrt{11} }{\sqrt{11} })[/tex]
= [tex]\sqrt{11} (\sqrt{11} ) - \sqrt{11} (1) /\sqrt{11} (\sqrt{11} )[/tex]
= [tex](\sqrt{121} -\sqrt{11}) /\sqrt{121}[/tex]
= [tex](11 - \sqrt{11} )/11[/tex]
= [tex]\frac{11}{11} -\frac{\sqrt{11} }{11}[/tex]
[tex]= 1 - \frac{\sqrt{11} }{11}[/tex]
Sandra needs 180 feet of purple ribbon to prepare wedding decorations. How many yards of ribbon is this
Answer:
that would be 60 yards
Step-by-step explanation:
3 feet in 1 yard, so divide 180 by 3 and you get 60 yards
What is the surface area of a rectangular prism that has a length of 18 inches, a width of 1 foot, and a height of 14 inches?
252 in. 2
3,024 in. 2
1,272 in. 2
568 in. 2
Answer:
C
Step-by-step explanation:
Givens
L = 18 inches
W = 1 foot = 12 inches
H = 14 inches
Surface Area = 2 * L*w + 2*L * h + 2*w*h
Surface Area = 2 * 18*12 +2*18*14 + 2*12*14 all in linear inches
Surface Area = 432 + 504 + 336 all in square inches
Surface Area = 1272 in^2
It is stated that the functions and are determined by:
how do I set up an equation that can be used to determine the first coordinate of the intersection of the graphs?
Answer: I cant see the question that you asked putting it on the?
Step-by-step explanation:
what is the volume for 7 1/2 cm by 12 cm by 15 1/2?
Answer:
1/(1/8)= 8 cubes
Step-by-step explanation:
Volume of a rectangular prism is length × height × width
Length=7 1/2
Width= 15 1/2
Height=12
Volume of the prism is therefore:
7 1/2×12×15 1/2= 1395cm3
No of cubes with edge length 1/2 to fit into the prism will be:
Volume of cube is L*W*H
1/2*1/2*1/2= 1/8cm3
Therefore the no of cubes to fit into the Prism will be:
1395/(1/8)= 11160 cubes.
If one was stuck,the number of 1/2 edge length cube to fit into 1cm will be:
james is cutting a 9-foot board into pieces. each piece is 3/5 foot long. how many pieces will he have when its done
Answer:
15 pieces
Step-by-step explanation:
Hope it helps!
Answer:
15
Step-by-step explanation:
NEED HELP INSTANTLY AND WILL GIVE BRAINLIEST AND THANKS
What is the slope of the line that passes through the points (2, −3.5) and (4, 5.5) ?
92
13
29
I don't know
Answer:
hope it helps you.......
The required slope of the line passing through the points is m = 9/2. Option A is correct.
Given that,
To determine the slope of the line that passes through the points (2, −3.5) and (4, 5.5).
The slope of the line is a tangent angle made by line with horizontal. i.e. m =tanx where x in degrees.
Here,
The slope of the line passing through two points is given by,
m = (y₂ - y₁) / (x₂ - x₁)
Substitute value in the above equation
m= 5.5 +3.5 / 4 - 2
m = 9 / 2
Thus, the required slope of the line passing through the points is m = 9/2. Option A is correct.
Learn more about slopes here:
https://brainly.com/question/3605446
#SPJ5
product of 3y and 4 (7th grade)
Answer:
12y
Step-by-step explanation:
ill give you more websites if you need them!
Answer:
-1x - 5
Step-by-step explanation:
Okay, so I believe you need to find what 3x + 5 and -4x - 10 equals?
For this you have to add like terms:
3x - 4x = -1x
5 - 10 = -5
If this isn't it just comment and I'll edit my answer! :)
Plssss help me plssss
Answer:
5 courage 1 classic
Step-by-step explanation:
So you already have 5 of the courage’s. Then, one fifth of them is 5/5=1. So 1 classic
Solve pls brainliest! the first one to answer it gets the brainliest
Answer:
2.4
Step-by-step explanation: