Step-by-step explanation:
f(x) = 4x² + 7x - 18
f(-9) = 4 * (-9)² + 7 * (-9) - 18
= 324 - 63 - 18
= 243
Hope it will help :)
Heather finished the 12-kilometer race in 2 hours. If Heather kept her pace constant, what was her rate? A. 24 km/hr. B. 14 km/hr. C. 10 km/hr. D. 6 km/hr.
Answer: D, 6km/hr.
Step-by-step explanation:
Heather can finish a 12-kilometer race in 2 hours, and now we have to find how many kilometers she can ride/run at in 1 hour.
How many hours can Heather run in 1 hour? To solve that, we can use the equation 12 ÷ 2.
12 ÷ 2 = 6.
Therefore, if Heather keeps her pace constant, then her rate will be 6km/hr, or D.
I think it’s C am I correct
Answer:
yes you are correct it is c
Step-by-step explanation:
A coin is tossed 30 times. The experimental probability of the coin showing tails is 40%. How many times did the coin show heads?
Answer: 10 i just had this question
ep-by-step explanation:
Answer:
18
Step-by-step explanation:
Just find the other 60 percent of 30 so just multiply it by 6/10 which is 18
What is the measure of 1?
A.15
B.35
C.37
D.79
Answer:
we have
1+2=180(being co-interior angle)
2x+5+3x-10=180
5x-5=180
5x=180+5
x=185/5=37
m<1=2x+5=2×37+5=74+5=79
please help asap!!! ive done most of it
Answer:
what type of answer are you looking for exactly
Step-by-step explanation:
The area of a rectangle is 300 ft2. The width of the rectangle is 8 ft less
than the length. What are the dimensions of the rectangle?
Answer:
Step-by-step explanation:
Factor x2 +8x +16, so (x+4)2 = 100
Solve the system using substitution.
Y-2x=3
3x – 2y=5
A.(-1/2,2)
B. (2,7)
C. (-8,-13)
D. (-11,-19)
What is the value of x?
Answer:
4x= 40
Step-by-step explanation:
40/4 = 10
I just don’t get what they want so
x-5= -4
what is the answer for x?
Answer:
x = 1
Step-by-step explanation:
by solving the equation we get ;
x -5 = -4x = -4 + 5x = 1Step-by-step explanation:
x = 1
hope it helps
Be happy and make happy
When using substitution to solve this system of equations
6y + 2x = 3
2x + y = 8
which variable will you solve for?
2. An atom is found to have 32 protons, 40 neutrons, and 32 electrons
a. Recall the mass of a proton, in atomic mass units
Answer:
Hey is this math problem be completely factored?
5(m^2+9m)
Answer: Yes!
Step-by-step explanation:
Nothing has been distributed because there is still 5(m^2+9m) which would mean it has not been multiplied by anything yet.
How many feet did Marcus travel? ( 1 mile=5280 feet)
Answer:
5280
Step-by-step explanation:
Enter the rule used to transform triangle ABC . If there is a dilation, dilate with respect to the origin. The rule used to transform triangle ABC(x,y)
Answer:
There is a dilation and the scale factor is 4
Step-by-step explanation:
The details that complete the question are:
△ABC
A(2, 5), B(6, 10), C(9, −1)
△A′B′C′
A′(0.5, 1.25), B′(1.5, 2.5), C′(2.25, −0.25)
Checking if there is dilation or not
To do this, we make use of the following scale factor (k) formula:
[tex]k = \frac{Original}{Image}[/tex]
Using A and A'
[tex]k = \frac{A}{A'}[/tex]
[tex]k = \frac{(2,5)}{(0.5,1.25)}[/tex]
Factorize the numerator
[tex]k = \frac{4(0.5,1.25)}{(0.5,1.25)}[/tex]
[tex]k = 4*\frac{(0.5,1.25)}{(0.5,1.25)}[/tex]
[tex]k = 4 * 1[/tex]
[tex]k =4[/tex]
Using B and B'
[tex]k = \frac{B}{B'}[/tex]
[tex]k = \frac{(6,10)}{(1.5, 2.5)}[/tex]
Factorize the numerator
[tex]k = \frac{4(1.5, 2.5)}{(1.5, 2.5)}[/tex]
[tex]k = 4*\frac{(1.5, 2.5)}{(1.5, 2.5)}[/tex]
[tex]k = 4 * 1[/tex]
[tex]k =4[/tex]
Using C and C'
[tex]k = \frac{C}{C'}[/tex]
[tex]k = \frac{(9, -1)}{(2.25, -0.25)}[/tex]
Factorize the numerator
[tex]k = \frac{4(2.25, -0.25)}{(2.25, -0.25)}[/tex]
[tex]k = 4*\frac{(2.25, -0.25)}{(2.25, -0.25)}[/tex]
[tex]k = 4*\frac{(2.25, -0.25)}{(2.25, -0.25)}[/tex]
[tex]k = 4 * 1[/tex]
[tex]k =4[/tex]
The above shows that k is 4 in all cases.
Hence, there is a dilation and the scale factor is 4
What is the measure of ZABC?
A. 85°
130
D
B. 170°
40-
E
C. 40°
D. 130°
Answer:
A. 85°
Step-by-step explanation:
By intersecting chords theorem:
[tex] m\angle ABC= \frac{1}{2} (130 \degree + 40 \degree)[/tex]
[tex] m\angle ABC= \frac{1}{2}\times 170 \degree[/tex]
[tex] m\angle ABC= 85 \degree[/tex]
A clothing manufacturer produces 120 garments per hour, of which 5 are damaged. How many garments without damage would the manufacture except to produce in 8 hours?
Answer:
Step-by-step explanation:First we have to found all the clothes that the manufacturer produces in 8 hours,
As given 120 clothes = produce in 1 hour
X clothes = produce in 8 hour
By cross multiplication, we get
X= 120*8
X= 960 total clothes produced in 8 hours
As also given that in each hour 5 clothes damaged ,so we can write as
5 clothes = damaged in 1 hour
Y clothes = Damaged in 8 hour
By cross multiplication we get
Y= 40 clothes damaged in 8 hour
So the total clothes that manufacturer produce with out damage clothe will be ,
Total normal clothes = X-Y = 960 - 40 = 920 clothes
Choose the correct answer
When solving a quadratic equation using the quadratic formula, the value of the discriminant is -16. How
many and what type of solutions does the quadratic equation have?
on
O 1 Rational Solution
ne
2 Irrational Solutions
O 2 Imaginary Solutions
O 2 Rational Solutions
• Previous
Next
Answer:
Step-by-step explanation:
Rational solution
can you help me please
Answer:
GFKSKKGKKSFG
Step-by-step explanation:
Yasmine is having a birthday party. Five people are sharing 34's of a pizza. What portion of the whole pizza will each person receive?
Answer:
3/20
Step-by-step explanation:
Given that :
Share for 5 persons = 3/4 of a whole pizza
Each person gets an equal size of the share :
Hence, share per person :
Portion of pizza / number of persons
3/4 ÷ 5
3/4 * 1/5
= (3*1) / (4*5)
= 3/20
Which of the following has the steepest graph ?
Answer:
D also if you input these equations into Desmos it can graph it for you :)
Step-by-step explanation:
Problem 1
Twenty pounds of strawberries are being shared equally by a group of friends. The equation 20÷5=4 represents the division of strawberries.
a. If the 5 represents the number of people, what does the 4 represent?
:
Answer:
it represents how many each person gets
Answer:
Hello im pretty sure that the represents the friend prove me if im wrong
Step-by-step explanation:
Please solve number 16 for me.
Answer:
post pictures also for your answer
In a fruit punch you mix 150 ml of lemonade with 250 ml of fruit juice. Write the ratio of the volume of lemonade to the volume of fruit juice. Give your ratio in its simplest form.
Answer:the ratio of the volume of lemonade to the volume of fruit juice in simplest form = 3:5
Step-by-step explanation:
Volume of lemonade in the mixture = 150ml
Volume of fruit juice in the mixture = 250ml
Ratio of the volume of lemonade to the volume of fruit juice= 150ml: 250ml
and reducing to the simplest form , we have
150:250
dividing both by 10 gives
15:25
dividing both by 5 gives
3:5
Therefore the ratio of the volume of lemonade to the volume of fruit juice in simplest form = 3:5
Jayden filled his 290 gallon pool with water in 4 hours. How many gallons per hour did he use?
Answer:
72.5 gallons an hour (i think im sorry if im wrong)
Step-by-step explanation:
Maria and Don had $20,800 in medical expenses. Their family medical insurance covered 60% of these expenses. The IRS allows medical and dental expense deductions for the amount that exceeds 10% of a taxpayer's adjusted gross income. If their adjusted gross income is $101,598, how much can they claim as a medical deduction? Fill in the blank 1 Next
Maria and Don has claimed $1839.8 as a medical deduction.
Calculate medical expenses after removing medical insurance expense, that is
20,800 - 60% of 20,800
= 12480
Now, 20,800-12480
=$8,320
Now calculate 10% of gross income
10% of 101,598
= 10/100 × 101,598
= 0.1 × 101,598
= $10,159.8
Now medical deduction = 10% of income - Medical expenses
= 10,159.8-8,320
= $1839.8
Therefore, the medical deduction is $1839.8.
To learn more about the tax visit:
brainly.com/question/16423331.
#SPJ4
9 7 5 10 5 3 work out the median
Answer:
6
Step-by-step explanation:
3 5 5 7 9 10
Take 5 and 7 and then avrage them.
A housekeeper had 3/7 of a spray bottle of a cleaning solution. Used 1/9 of the solution in a day . How much of the bottle did she use
Answer:
27/7 or 3 6/7
Step-by-step explanation:
3/7 divided by 1/9 = 27/7
rounded to 3
Have a nice day
The 0.317 spray bottle did she us.
It is required to find how much of the bottle did she use.
What is fraction?A fraction having whole numbers for the numerator and denominator. A fraction is a number of the form: ab where a and b are integers and b≠0. It represents the division of two numbers.
Given:
We know that total =1
For a cleaning solution=3/7 of a spray bottle
Used=1/9
According to given question we have,
Subtract the fractions
3/7 - 1/9
Calculate the difference,
=20/63
=0.317
Therefore, the 0.317 spray bottle did she us.
Learn more about fraction here:
brainly.com/question/21342360
#SPJ2
The values in the x column represent a specific number pattern, while the values in the y column represent a different pattern. Which graph provides a visualization of these two patterns?
Answer:
please give me more context so I can help you more
Write an equation of the line that has a slope of -8 y-intercept of 2
Answer:
y=-8x+2
Step-by-step explanation: