Answer:
x=12
Step-by-step explanation:
Let's solve your equation step-by-step.
2x+8+5x−2=90
Step 1: Simplify both sides of the equation.
2x+8+5x−2=90
2x+8+5x+−2=90
(2x+5x)+(8+−2)=90(Combine Like Terms)
7x+6=90
7x+6=90
Step 2: Subtract 6 from both sides.
7x+6−6=90−6
7x=84
Step 3: Divide both sides by 7.
7x7=847
x=12
In Mrs. Kelly's class, 1/5 of the students failed the math test. Of the remaining students in the class, 1/4 scored an A. What fraction of the whole class passed the test, but scored below an A?
The basketball team scored 85 points in the last 2 games.How many points can they expect to score after 5games?
Answer:
297.5
Step-by-step explanation:
85/2=42.5 per game
42.5×5=212.5
85+212.5=297.5
Lena used a total of 3 5/6 gallons of gas while driving her car. Each hour she was driving, she used 7/9 gallons of gas. What was the total number of hours she was driving?
Step-by-step explanation:
3 x 5/6 = 2.5 gallons of gas used
7/9 galllons per 1 hour
Hence if she used 2.5 gallons,
2.5 ÷ 7/9 =
[tex]3 \frac{3}{14} hours[/tex]
what is bigger, 1/2 or 2/3?
Answer:
2/3
Step-by-step explanation:
2/3 is bigger because it takes up more than a half.
Jack's family took a road trip to Mount Rushmore. Jack slept through the last 65% of the trip. If the total length of the trip was 700 miles, how many miles had they travelled when Jack fell asleep?
Using proportions, it is found that they had traveled 245 miles when Jack fell asleep.
What is a proportion?A proportion is a fraction of a total amount.
Jack slept through the last 65% of the trip, hence he fell asleep when 100 - 65 = 35% of the 700 mile trip had been traveled, so:
0.35 x 700 = 245.
They had traveled 245 miles when Jack fell asleep.
More can be learned about proportions at https://brainly.com/question/24372153
Answer:245 miles
Step-by-step explanation:Using proportions, it is found that they had traveled 245 miles when Jack fell asleep.
What is a proportion?
A proportion is a fraction of a total amount.
Jack slept through the last 65% of the trip, hence he fell asleep when 100 - 65 = 35% of the 700 mile trip had been traveled, so:
0.35 x 700 = 245.
They had traveled 245 miles when Jack fell asleep.
Solve each equation by factoring
3x^2-14x=-8
3x² - 14x + 8 = 0
Δ = (-14)² - 4*3*8 = 196 - 96 = 100 = 10²
2 solutions
x' = (14 + 10) / (2*3) = 24 : 6 = 4
x" = (14 - 10) / (2*3) =4/6 = 2/3
3 (x - 4) (x - 2/3) = 0
ASAP WILL GIVE BRAINLIEST
For what value(s) of k will each relation not be a function? B = {(k^2-5k,10), (k+7,4)}
Answer:
7, -1
Step-by-step explanation:
Find which values of k will fit both expressions.
k^2 - 5k = k + 7
Solve equation.
k = 7, -1
Can some help me please
Answer: 2/10
Step-by-step explanation:
Multiply each X value by the probability it happens. This gives 0(10/10)+1(2/10)=2/10
A system of equations has no solution. If y = 8x + 7 is one of the equations, which could be the other equation?
O 2y = 16x +14
O y = 8x - 7
O y = -8x + 7
O 2y = -16x - 14
Answer: y=8x-7 just took the quiz hope that helps
The other equation could be y = 8x - 7
What is equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign. In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal. For instance, 3x + 5 = 14 is an equation, in which 3x + 5 and 14 are two expressions separated by an 'equal' sign.
here, we have,
to determine the other equation:
The first equation is given as:
y = 8x + 7
For the system of equation to have no solution, then the equations in the system would have different constant values.
Take for instance:
y = 8x + b
Where:
b is a constant not equal to 7
From the options, we have:
y = 8x - 7
Notice that -7 and 7 are not the same
Hence, the other equation could be y = 8x - 7
Read more about system of equations at:
brainly.com/question/13729904
#SPJ7
Need help with my Math homework
Answer:
Step-by-step explanation:
What is 5 * 5 yeehaw new chaatatattatat
Answer:
25 yeehawwwww
Step-by-step explanation:
welp meeeee plssssss
Answer:
[tex]if \: \: \frac{p}{4} = \frac{6}{8} = \frac{3}{4} \\ so \: p \: is \: 3[/tex]
What is the equation of the line that contains the point (-1 , 4) and has a slope of 3?
Step-by-step explanation:
Let's write the equation with formula:- Where, x1 is -1 and y1 is 4 and m is 3Thus, The correct choice is option C.
Step-by-step explanation:
Equation of line formula=> y=mx+c
Let take point (-1,4) as (x, y) and slope m=3
4= 3(-1) +c
4= -3+c
4+3=c
7=c
Therefore by using equation of line formula we get
y= mx+c [m=3 , c=7]
y=3x+7
What’s the answer? Because am having a hard time with this math problem.
9514 1404 393
Answer:
34.5 square meters
Step-by-step explanation:
We assume you want to find the area of the shaded region. (The actual question is not visible here.)
The area of the triangle (including the rectangle) is given by the formula ...
A = 1/2bh
The figure shows the base of the triangle is 11 m, and the height is 1+5+3 = 9 m. So, the triangle area is ...
A = (1/2)(11 m)(9 m) = 49.5 m^2
The rectangle area is the product of its length and width:
A = LW
The figure shows the rectangle is 5 m high and 3 m wide, so its area is ...
A = (5 m)(3 m) = 15 m^2
The shaded area is the difference between the triangle area and the rectangle area:
shaded area = 49.5 m^2 - 15 m^2 = 34.5 m^2
The shaded region has an area of 34.5 square meters.
Krysta is finding the volume of a cylinder and the volume of a sphere. Both the cylinder and the sphere have a radius of 4 inches. The cylinder has a height of 8 inches. What is the volume of the cylinder?
Answer: 402.12 cubic inches
Step-by-step explanation:
Formula for volume of a cylinder: area of base x height
Area of base: pi x radius squared
So, pi x 4 squared
= 50.27
50.27 x 8 = 402.12
williamm3246 this for you
This is for you William3246! Whoever or whatever you are. ¯\_(ツ)_/¯
PLEASE HELP!!
Only respond if you know the answer
15 ∙ 10 ∙ 2 + 15 ∙ 7 ∙2 + 7 ∙ 10 ∙ 2 which equals 650
The surface area of the jewelry box is 650 sq2
What is the surface area of the box if it is scaled up by a factor of 10?
Answer:
the answer is 6500
Step-by-step explanation:
hope this helps
y= 16 + 5x
x= -2
Solve it algebraically
Answer:
[tex]x=-2[/tex]
[tex]y=6[/tex]
Step-by-step explanation:
substitute in -2 to replace the x
[tex]y=16+5(-2)[/tex]
[tex]y=16-10[/tex]
[tex]y=6[/tex]
If the angle is 111.6 what is x
Answer:
the angle would be 111.6 because they are vertical meaning that they are exact opposite of the other but have the same angle measurement.
Step-by-step explanation:
Fifteen is 30% of what number
Answer:
15 is 30% of 50
Step-by-step explanation:
Answer:
50
Step-by-step explanation:
[tex]\frac{5}{x} =\frac{13}{100}[/tex]
5×100=500
500÷13=50
(x+y) (a+b)-(y+z) (a+b)
Answer:
(x+y)(a+b)-(y+z)(a+b)
first we solve half
(x+y)(a+b)
(xa+xb+ya+yb)
(y+z)(a+b)
(ya+yb+za+zb)
(xa+xb+ya+yb)-(ya+yb+za+zb)
xa+xb+ya+yb-ya-yb-za-zb
which needs to cut
+ya-ya+yb-yb
now left
xa+xb-za-zb
x (a+b)-z (a+b)
(x-z)(a+b)2
Help worth 50 POINTS and BRAINLIEST
Answer:
B i think
Step-by-step explanation:
let one truck be t
10t = 120
t = 12
Answer:
120÷10
=12
Jay can clean 12 trucks
Without graphing, tell whether the slope of a line that models the linear relationship is positive, negative, zero, or undefined. Then find the slope. The total cost, including shipping, for ordering five uniforms is $63. The total cost, including shipping, for ordering seven uniforms is $83.
Answer:
A--> W, Z, U, Y
Step-by-step explanation:
I took the test on Edge
Please help with angle x
Answer:
x = 155
Step-by-step explanation:
Find the value of m<3 - m<1
Answer:
if this is the image then the answer would be B.
Step-by-step explanation:
What is the value of x that makes the given equation true? -90 = -100 + x
A. -10
B. 10
C. -190
D. 190
-90 = -100+x
-90+100=X
+10 =X
OPTION B:- 10
Option B :- 10
Explanation :
[tex] - 90 = - 100 + x \\ - x = - 100 + 90 \\ - x = - 10 \\ x = 10 \\ [/tex]
PLEASE HELP!
find the area!
its pretty easy
Answer:
39 right? or that's perimeter ??
Step-by-step explanation:
Answer:
191.25 mm
Step-by-step explanation:
area of triangle is 1/2 b*h
1/2 (7.5*15) = 56.25
area of rectangle is b*h
15*9 = 135
56.25+135 = 191.25
The developmental department for a National Lawn Care Services Provider is interested in improving products and services. The germination periods, in days, for grass seed are normally distributed with a population standard deviation of 7 days and an unknown population mean. If a random sample of 17 types of grass seed is taken and results in a sample mean of 37 days, find the error bound (EBM) of the confidence interval with a 98% confidence level.
Answer:
3.949
Step-by-step explanation:
We can use the formula to find the error bound:
EBM=(zα/2)(σn/√)
We know that σ=7 and n=17. We are also given that the confidence level (CL) is 98%, or 0.98. So, we can calculate alpha (α).
α=1−CL
=1−0.98
=0.02
Since α=0.02, we know that
α2=0.022=0.01
The value of z0.01 is 2.326. Now we can substitute the values into the formula to find the error bound.
EBM=(zα/2)(σ/√n)
=(2.326)(7/√17)
≈(2.326)(1.698)
≈3.949
So, the error bound (EBM) is 3.949.
X - 10 - 68 - 17 =(when x = 0)

Answer:
-95
Step-by-step explanation:
0 - 10 - 68 - 17
-10 - 68 - 17
=-95
Answer:
-95
Step-by-step explanation:
Find the area of the trapezoid
Answer:
49 units squared
Step-by-step explanation:
The area of a trapezoid is calculated with the following formula:
(a+b)*1/2*h (a: base, b: base, h: height)
(3+11) * 1/2 * 7 = 49 the area is stated in square units so the answer is 49^2