Answer:
Step-by-step explanation:
He has 1.5 of each
A student answers 70% of the questions on a math exam correctly. If he answers 21 questions correctly , how many questions are on the exam ?
Answer:
There are 30 questions
Step-by-step explanation:
70%=21
70%÷7=10%
21÷7=3
10%=3
10%×10=100%
3×10=30
Hope this helped :)
If two angles of measure (x + 3)º and (2x – 9)º
complementary, then what is the value of x?
HELP ME FAST.
Step-by-step explanation:
(X+3)(2x_9)
3x+12_12=90_12
3x=90_12
3x=78
X=26°
what is the domain of f(x)=2x is all real number or all positive number or all positive and zore
Answer:
The domain is all real numbers
Step-by-step explanation:
There aren't any restrictions like a square root, an even exponent, or a denominator. If you ever get stuck, feel free to use something like the Desmos graphing calculator to graph out the equation.
In triangle DEF, segment DJ is a perpendicular bisector of side EF. If EJ is 3y-8 and JF is 7y-40, what is the length of JF?
Answer: The length of JF = 16 units.
Step-by-step explanation:
Given: In triangle DEF, segment DJ is a perpendicular bisector of side EF.
i.e. DJ is perpendicular to EF and DJ divides EF into two equal parts EJ and JF. [The perpendicular bisector is a line that is perpendicular to a line segment and splits it into two congruent segments.]
If EJ is 3y-8 and JF is 7y-40.
Then, [tex]3y-8=7y-40[/tex]
[tex]\Rightarrow\ 7y-3y=40-8\\\\\Rightarrow\ 4y=32\\\\\Rightarrow\ y=8 \text{ [Divide both sides by 4]}[/tex]
JF= 7(8)-40 =56-40= 16 units
Hence, the length of JF = 16 units.
Answer:
plz giv brainlist
Step-by-step explanation:
Cait went apple picking with 3 friends. The 4 of them picked 17.4 lbs of
apples and want to split it equally. How many lbs of apples do they each
get?
Answer:
4.35 pounds each gets
Step-by-step explanation:
if you divide 17.4 by 4 you get 4.35 pound per each of the 4 people get
does the ordered pair (8,48) satisfy the direct equation y=6x? explain why or why not
Answer:
i think yes the order pair of (8,48) satisfy the direct equation y=6x
Step-by-step explanation:
negative four times the sum of a number and 3 is at least 28, translate.
Answer: [tex]-4 * (n+3) \geq 28[/tex]
Step-by-step explanation:
Negative four -> [tex]-4[/tex]
Times the sum of a number and 3 -> [tex]-4 * (n + 3)[/tex]
Is at least 28 -> [tex]-4 * (n+3) \geq 28[/tex]
ILL MARK U BRAINLIEST!!
Answer:
It's the bottom one.
Step-by-step explanation:
number one makes no snese because inside of you there is no light
number two, heat and thermal are the same thing
number three, there isn't really potential energy inside you, not in the process of the energy transformation of food.
The bottom one makes the most sense because if you think about all of the steps, it goes chemical (stomach acid), there is also some heat in there, and then mechanical when the food moves from place to place
Answer:
The answer is D
Step-by-step explanation:
need rn! worth 13 ~ what is the equation of the parabola? 謝謝
Answer:
Its B.
Step-by-step explanation:
Emath.com- Parabola calculator
According to the graph, what is the constant of proportionality?
A. The waiter earns $25 an hour.
B. The waiter earns $20 an hour.
C. The waiter earns $15 an hour.
D. The waiter earns $10 an hour.
A. The waiter earns $25 an hour
Vicki earns $30 for washing 6 cars. If Vicky charges the same rate, how many cars. must she wash to earn $35? (Label your answer for full credit)
Answer:
7
Step-by-step explanation:
if she got 30 from 6 cars then 30/6 is 5. $5 per car times 7 is $35
Which one??? I need help. Be serious please
Answer:
c
Step-by-step explanation:
10+12=22
=22^2
=484
Answer:
I believe the answer is C or D.
Step-by-step explanation:
Jennifer sells cosmetics. Her commission is 30 percent of the selling price of every item she
sells. What is her commission when she sells cosmetics totaling $717.53?
Answer:
$215.26
Step-by-step explanation:
717.53*30%= $215.26
Select all of the statements that are true for the given parabola
Answer: Please provide statements.
Step-by-step explanation:
Answer:
The maximum is (-1, 6).
The line of symmetry is x = -1.
Step-by-step explanation:
those two
Find the measure of each missing angle.
Answer:
<1=63°
<2=49°
<3=87°
<4=44°
Step-by-step explanation:
<1=180-68-49=63°
<2=49°
<3=180-93=87°
<4=180-49-87=44°
Oliver is using plywood to build the skateboard ramp shown. Three sides of the ramp are rectangles. How many square feet of plywood does Oliver need to build the ramp?
I will mark brainliest
Answer:
18
Step-by-step explanation:
Your bank pays 4% annual interest compounded quarterly on January 1, April 1, July 1, and October 1. You deposited $840 on April 1 and made no other deposits or withdrawals. Find your savings account balance on January 1 of the next year.
and
Your bank pays 4% annual interest compounded quarterly on January 1, April 1, July 1, and October 1. You deposited $840 on April 1 and made no other deposits or withdrawals. How much interest did you earn for these nine months?
Answer:
The interest earned in 9 months is $25.45284
Step-by-step explanation:
The interest rate given by the bank = 4%
The rate at which the interest is applied = Quarterly
The amount of money deposited = $840
The formula for compound interest is given as follows;
[tex]Compound \ interest = P \times \left [ \left(1 + \dfrac{r}{n} \right )^{t \times n} - 1\right ][/tex]
Where;
P = The principal = $840
r = The rate = 4% = 0.04
n = The number of times the interest is compounded per period = quarterly = 4
t = The time duration in period = 9 months = 3/4 × 1 year
Substituting the values gives the Compound interest C.I. as follows;
[tex]C.I. = 840 \times \left [ \left(1 + \dfrac{0.04}{4} \right )^{\dfrac{3}{4} \times 3} - 1\right ] = 840 \times \left [ \left(1 + \dfrac{0.04}{4} \right )^{ 3} - 1\right ] = \$ 25.45284[/tex]
The interest earned in 9 months = $25.45284.
????????? Help pls & thanks
John writes the proof below to show that the sum of the angles in a triangle is equal to 180º.
Answer:
When two parallel lines are cut by a transversal, the resulting alternate exterior angles are congruent.
Step-by-step explanation:
i did it
4. Which r - value suggests a strong
positive correlation?
r= 0.1847
r= -0.1847
r= 0.9974
r= -0.9974
Answer:
It would be r= 0.9974.
The closer the r value is to 1 or -1 the stronger it is.
Positive and negative are just determining what "side" its on.
Let me know if this helps!
can you pls help this is 6th grade math
Answer: 12 red 9 blue
Step-by-step explanation:
Tyrell is bringing food to a community picnic. He expects 105 people to attend the picnic. He brings 4 cups of potato salad for every 7 people and 5 hot dogs for every 3 people. Select True or False for each statement. True False Tyrell brings 35 hot dogs. O True False Tyrell brings 60 cups of potato salad. The ratio of hot dogs to cups of potato salad that Tyrell brings to the picnic can be written 5:4. the ratio of cups of potato salad too hot dogs at Tyrell brings to the picnic can be written as 12:35
Answer:
1. false
2.true
3.false
4. true
Step-by-step explanation:
Find the value of W please help due tomorrow
Answer:
59 degrees
Step-by-step explanation:
All the angles of a triangle (when combined) result in 180 degrees. This means that:
Angle 1 + angle 2 + angle 3 = 180 degrees.
We can see here that the shape here is a right triangle (noted by the square in the corner). This means that the angle set with the square is equal to 90. With this, we already have two of our angles! All we need is to set the equation using w, the angle you'll want to find:
31 + 90 + w = 180
w = 59
And there you are! Make sure to practice a few more problems like these to really get the hang of it. Good luck!
HELP ME LLEASE WUIZ OMG WHAT ARE THE CORDS? 30 points
Answer: -1/2 and 1/3
Step-by-step explanation:
Use the the image below to determine the angle type, relationship, value of x, and the missing angle measures.
Type =
Relationship =
Value of x =
Missing angle measures =
Answer:
Name: alternate exterior angles
Relationship: they are congruent. (15x + 5)° = (14x + 11)
Value of x: 6
Missing angle measures: 95°
To solve the equation x - 4 = 12,
A) Add 4 to both sides
B) subtract 4 from both sides.
C) add 4 to the left and subtract from the right.
D) subtract 12 from the right and add 4 to the left
Answer:
X = 16
Step-by-step explanation:
Yes, to solve this equation Add both side by 4What is the answer for both?
Answer:
What is the question from both?
Answer:
(4,2) for the first one
(2,-1) for the second one
to get the answers I got, equate Both
(please i'm taking a test) A fraction is never a rational number true or false
What is the correct answer?
Answer:
C) y = 10/3x - 5
Step-by-step explanation:
Slope intercept equation is y = mx + b:
m is the slope
b is y-intercept
When you read slope you can also read it as rise over run. Rise is move up or down on the y axis depending if number is negative or positive. Run is move left or right on x axis depending if number is negative or positive.
Example: y = [tex]\frac{10}{3} x - 5[/tex]
Start at the y-intercept which is -5. On graph you can see the line crosses the y axis at (0, -5). From this point rise 10 then run 3 you'll end up at point (3, 5). Connect the dots of the two points and you'll see a line like the one in the problem.
What is mZCAD?
O 80°
O 20°
O 80°
O 100°
O 110°
Answer:
The angle of CAD is 100°.
Step-by-step explanation:
Given that total angles in a triangle is 180° so you will have to find the angle of CAB :
∠CAB + ∠ACB + ∠ABC = 180°
∠CAB + 80° + 20° = 180°
∠CAB + 100° = 180°
∠CAB = 180° - 100°
∠CAB = 80°
Next, you have to subtract it from 180° because straight line have a degree of 180°
∠CAD = 180° - 80°
∠CAD = 100°