Fred completed 10 math problems. This is 40% of the number of math problems he has to do. How many math problems must he do?
Group of answer choices
40
30
25
15
Answer:
25
Step-by-step explanation:
we find how many problems 1% is first by solving 10/40, which gives us .25
then, we multiply by 100, which results in 25.
i could try to explain better if you'd like
You can work a total of no more than 10 hours each week at your iwo jobs. House cleaning pays $5 per hour and
your sales job pays $8 per hour. You need to earn at least $56 each week to pay your bills. Write a system of
inequalities that show the various numbers of hours you can work at each job.
I'm not 100% sure but it's not u
Joseph went to visit his grandmother with his parents .They drove 240 miles in 4 hours .What was the average speed they were traveling? Be sure to show your work on how the answer is 60 miles per hour
Answer:
Average speed was 60mph so 240 ÷ 4 = 60
The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of 98.27°F and a standard
deviation of 0.54°F. Using the empirical rule, find each approximate percentage below.
a. What is the approximate percentage of healthy adults with body temperatures within 1 standard deviation of the mean, or
between 97.73 °F and 98.81°F?
Answer: follow this you'll be able to solve it
Step-by-step explanation: mean = 98.11F
standard deviation = 0.56F
99.79 – 98.11 = 1.68 = 3 standard deviations
96.43 – 98.11 = –1.68 = –3 standard deviations
96.43F and 99.79F are 3 standard deviations from the mean 98.11F.
By the empirical rule we know that 99.7% of the data lies within 3 standard deviation of the mean.
Approximately 68% of healthy adults in this group have body temperatures within 1 standard of the mean, or between 97.55F and 98.67F.
If x = -12, then solve:
-X =
(Please help me need answer by 1pm)
Answer:
-x = 12
Step-by-step explanation:
x = -12
if you multiply both sides of the equation by -1, you get
-1x = -12 * -1
-x = 12
Answer:
12
Step-by-step explanation:
So what we know is that x is equal to negative 12. To make this easier you can say that -x is the same as -1 times x like shown below,
-1 × [tex]x[/tex] is the same as -X
We can replace the x with -12 and a negative times a negative is a positive so the answer would be 12.
If you want me to explain it more let me know, but hopefully this helps and have a great day!
State if three numbers can be the measure of a triangle.
12, 12, 20
10,3,7
7,7,11
24, 9, 12
represent 20 degree 30' in radian
Answer:
20 D is 72%
Step-by-step explanation:
A segment that connects the center of a circle to a point on the circle is
called a. ____
Answer:
The a line segment from the center of the circle to any point on the circle is a radius of the circle.
Step-by-step explanation:
Answer:
radius
Step-by-step explanation:
What is the equation in slope-intercept form of the line that passes through the points (8,-10) and (0, -12)? O y=-1/4x + 12 O y = 1/4x - 12 O y = 4x + 12 O y = 4x - 12
Answer:
y=12xO+b(i think)
Step-by-step explanation:
The triangle shown below has a base of 6 inches and a height of 4 inches. 6 What is the area, in square inches, of this triangle?
Answer:
Step-by-step explanation:
formula = b*h : 2
=> 4*6:2=24:2=12
Which of the following are factor pairs for 72? You will select two.
2 x 36
3 x 18
6 x 12
8 x 8
Answer:
The two factor pairs for 72 are the following:
2 × 366 × 12Step-by-step explanation:
Of you take the answer to each equation only these two equal 72, leaving them as factors.
3 × 18 is equal to 54
8 × 8 is equal to 65
Which leaves them being the wrong answer
Find the length of the third side. If necessary, round to the nearest tenth. 6 7
Answer:
Use the Pythagorean theorem
Side = sqrt(7^2 - 6^2)
Side = sqrt(49-36)
Side = sqrt(13)
Rounded to nearest tenth = 9.22
Hope it helps!!!Brainliest pls!!!what is 15x1300-1000+14=?
Answer:
18514 if im wrong then sorry but i dont think its wrong
Step-by-step explanation:
Suppose a jar contains 9 red marbles and 15 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the probability that both are red.
Answer:
[tex] \frac{3}{23} [/tex]
Step-by-step explanation:
Since we start with 24 marbles, 9 of which are red, the probability of selecting a red marble is 9/24. The red marble is not put back, so there are now 23 marbles, 8 of which are red. It follows that the probability of selecting a second red marble is 8/23. So the probability of selecting a red marble and then another red marble is
[tex] \frac{9}{24} \times \frac{8}{23} = \frac{3}{8} \times \frac{8}{23} = \frac{3}{23} [/tex]
Write an equation that can be described by the statement: y is equal to 1/3 of x.
Enter the correct answer in the box.
Answer: [tex]y=\frac{1}{3} x[/tex]
Graph the following function:
f(x) = x² +5x - 6
What are the x-intercepts?
What is the y-intercept?
What is the maximum or minimum value?
Answer:
x-intercept(s): (1,0),(-6,0)
y-intercept: (0,-6)
I am not sure about the maximum and minimum value sorry
Solve for x.
√10x−29=x−2
Enter your answers in the boxes.
Answer:
x = 11, 3
Step-by-step explanation:
√(10x - 29) = x - 2
(√(10x - 29))² = (x - 2)²
10x - 29 = x² - 4x + 4
-10x + 29 -10x + 29
x² - 14x + 33
(x - 11) (x - 3)
x - 11 = 0; x - 3 = 0
+ 11 +11 +3 +3
x = 11 x = 3
I hope this helps!
The sum of teo numbers is 459909 . One number 400019. Find the other number?
Answer:
59890
you just subtract
459909-400019
Step-by-step explanation:
please pass this on... ( #helpsavelives )
Who ever is reading this:
I love u.
U matter.
The world needs u
hang in there ik it may be bad but u deserve the world <3
ur beautiful no matter ur shape, size, color, gender.. anything
don't give up i need u to live.
i wish i could take everyones problems so yall wouldn't have to have em but i cant so just know ily and if anyone needs to talk u can talk to me
Pls pass this on. Everyone deserves to know this. ♥️♥️
just copy and paste its not hard pls this could save someones life
Answer:
59890
Step-by-step explanation:
459909-400019
A box contains 15 identical balls - Six of the balls are redo 5 blue and the rest white. If three balls are selected one after one the other without replacement Find the probability that, are All three balls are red.
The answer is three red balls
Do these ratios form a proportion?
$30 per 46 pounds
$15 per 23 pounds
Answer: Yes!
Step-by-step explanation:
a proportion is when to ratios are equivalent to each other and that they are set equal to each other
If you see, $30 is divided by 2 to get $15. Same goes for the pounds, 46 is divided by 2 to get 23. They follow the same proportion
Which category do all of these shapes belong to?
Given that r = 9.2 m and = 17", work out AB rounded to 3 SF
Answer:
2.813 m
Step-by-step explanation:
x = 9.2 θ = 17 AB=?
Looking at our angle we have an adjacent side & need to find the opposite side.
So tan θ = opp/adj
tan 17 = AB/9.2
AB = 9.2tan17
AB = 2.813 m
what is 1/4 as a percentage
Answer:
The answer is 25%
Step-by-step explanation:
1/4=.25
.25=25%
Answer:
★ 1/4 written as a percent is 25%. To get this answer, divide 1 into 4. 1/4=0.25. Now, multiply 0.25 by 100 to get 25.
Step-by-step explanation:
Hope you have a great day :)
help please
find the value
Answer:
t = 9 cm
Step-by-step explanation:
Use Pythagoras' Theorem: a² + b² = c²
(where a and b are the legs and c is the hypotenuse of a right triangle)
Given:
a = 12b = tc = 15a² + b² = c²⇒ 12² + t² = 15²
⇒ 144 + t² = 225
⇒ t² = 225 - 144
⇒ t² = 81
⇒ t = √81
⇒ t = ±9
⇒ t = 9 only as length is always positive
Solution:
Pythagoras theorem can only be used in:
Right trianglesScalene right trianglesIsosceles right triangles.Since this is a scalene right triangle, we can use Pythagoras theorem to solve the missing length of the triangle.
=> The formula for Pythagoras theorem is a² + b² = c².Finding a, b, and c:
Let "a" be 12 cm and "b" be "t" cm."c" is the largest side of the triangle. This means that "c" is 15 cm, as it is the largest side of the triangle.Setting up the equation:
a² + b² = c²=> 12² + t² = 15²Simplifying the squares:
=> (12)(12) + t² = (15)(15)Subtracting (12)(12) both sides:
=> t² = -(12)(12) + (15)(15)=> t² = -144 + 225=> t² = 81Taking a square root both sides:
=> √t² = √81=> t = ±9Since the length cannot be negative, the value of t must be positive.
The final answer is...
t = 9What is the quotient when 7.8 is divided by 6 ?
Answer:
the anser is 1.3
have a nice day!
A pallet of toggle bolts weighs 516 kilograms. If a warehouse has 82 pallets what is their total weight
Answer:
1 pallet = 516kg
82 pallets = 516*82 = 42,312kg
simplify the radical expression.
3√0.125b3
0.5b
−0.5b
5b
−5b
Answer:
Simplify the radical expression. 3√0.125b3 0.5b −0.5b 5b −5b - did not match any documents.
Suggestions:
Make sure all words are spelled correctly.
Try different keywords.
Try more general keywords.
Try fewer keywords.
Step-by-step explanation:
Hello can someone please answer this question i will mark you the Brainliest
Answer:
A) 310 cm²
Step-by-step explanation:
The surface area is the area of the two-dimensional surfaces of this three-dimensional figure.
Start by multiplying each 5x4 rectangle. There are four of them that are visible from the front.
4(5 · 4) 4(20) = 80 cm²Now, find the surface area of the large rectangle in the back and the left side of the figure.
2(10 · 4) = 80 cm²Find the surface area of the top of this figure.
10 · 5 = 50 cm²5 · 5 = 25 cm²Find the surface area of the bottom of this figure (it's the same as the area of the top).
50 + 25 = 75 cm²Add all of the surface areas together to find the total surface area of the figure.
80 + 80 + 75 + 75 = 310 cm²The perimeter of a rectangular red sticker is 32 millimeters. The sticker is 12 millimeters wide. How tall is it?
Answer:
4 millimeters
Step-by-step explanation:
(32-24)/2
is -7 a solution to the equation 8(1/4x+3/4)-3+17?
yes
no