Answer:
x=2 y=-4
Step-by-step explanation:
2x-y=4 solve for x
2x-0=4
2x=4+0
2x=4 . divide both sides by 2
x=2
2x-y=4 . solve for y
0-y=4
-y=4 . divide both sides by -1
y=-4
The size of a school increased so that it had 750 pupils instead of 680 and
38 teachers instead of 37. Find the percentage increases in the number of teachers
and pupils. Comment on your answers.
Step-by-step explanation:
% increase in the no of pupils = {(750-680)/680} × 100 = 10.3%
% increase in the no of teachers = {(38-37)/37} × 100 = 2.7%
An angle measures 36º. What is the measure of its supplement?
Answer:
144° is the correct answer
sumpplement (angles that adds up to 180°)
: 180°-36°=144°
Write an expression to represent Royce's weight if she is three pounds more than twice Ted's weight. If Ted weighs 30 pounds, how much does Royce weigh?
Answer: 63 pounds
Step-by-step explanation:
Given
Royce's weight is 3 pounds more than twice ted's weight
The weight of ted is 30 pounds
So, the weight of Royce is [tex]2\times 30+3[/tex] pounds i.e. [tex]63[/tex] pounds
Suppose, if the weight of Ted is x then, the weight of Royce is [tex]2x+3[/tex]
Please help!
Three days a week after school, Sarah runs 2.2 miles each day. This week, Robert ran of the total d that Sarah ran. Also this week, Brooke ran 110% of the total distance that Sarah ran. What is the mea distance that each person ran this week?
A. 1.308 miles
B. 3.925 miles
C 5.995 miles
D. 17.985 miles
Answer:
c
Step-by-step explanation:
cvvvbbnh
Need help !
Is it linear , quadratic, exponential
Answer:
Exponential
Step-by-step explanation:
So lets look at the table.
When x = 1, y = 3
When x = 2, y = 9.
Hmmm, this doenst seem like x+number=y. It doesnt seem like a quadratic, where the values go up, then down, then up again. Or vise versa.
So this rules out linear and quadratic, for the x doesnt change by a constant, or change the direction of y.
This leaves exponential or none of the above.
When x = 3, y = 27
When x = 4, y = 81
This seems like a exponent, since:
3 to the first power is 3
3 to the second power is 9
3 to the third power is 27
and 3 to the fourth power is 81
Answer:
exponential function
Hope this helps! ;)
What is the fraction for 4.675?
Answer:
187/40
Step-by-step explanation:
have a nice day!
The fraction for 4.675 is 187/40 or 4 27/40
The picture shows
the layout of a
regular triangular
pyramid. Calculate
how many square
centimeters of paper
are needed to make
this pyramid. Provide
the answer to the
nearest square
centimeter.
Answers:
a) 693 sq cm (approximate)b) 48 sq cm (exact)============================================================
Explanation:
Part (a)
A regular triangular pyramid, aka regular tetrahedron, has all four triangles that are identical copies of one another. They are congruent triangles. This will apply to part (b) as well.
To find the area of one of the triangles, we'll use the formula
A = 0.25*sqrt(3)*x^2
where x is the side length. This formula applies to equilateral triangles only.
In this case, x = 20, so
A = 0.25*sqrt(3)*x^2
A = 0.25*sqrt(3)*20^2
A = 173.20508 approximately
That's the area of one triangle, but there are four total, so the entire area is about 4*173.20508 = 692.82032 which rounds to 693 sq cm.
The units "sq cm" can be written as "cm^2".
----------------------------
Part (b)
We'll use the same idea as part (a). But the formula to find the area of one triangle is much simpler.
The area of one of the triangles is A = 0.5*base*height = 0.5*6*4 = 12 sq cm.
So the area of all four triangles combined is 4*12 = 48 sq cm
This area is exact.
The area of each 2D flat net corresponds exactly to the surface area of each 3D pyramid. This is because we can cut the figure out and fold along the lines to form the 3D shapes.
At one school, the ratio of boys to girls in the seventh
grade is 12:11. There are 66 girls in the seventh grade.
How many boys are there?
Answer:
72
Step-by-step explanation:
It’s just the answer my teacher gave it to me lol
Please help I’m so lost .
Answer:
12.55
Step-by-step explanation:
Add them so its 12.55
Answer:12.55
Step-by-step explanation:
All you have to do is add 0.25 +12.3
to get 12.55
hope this helps!
What is the probability that Jenna buys exactly 3 bananas
Answer:
I can see black screen no photo for answering.
Of the students at Fillmore Middle
School, 0.5625 are bused to school.
Which percent is equivalent to 0.5625?
Answer:
56.25%
Step-by-step explanation:
I need all the help I can
Hilary measured the depth of the snow in her front yard for 7 days. An equation for Hilary's data is y = − 0.5 x + 8 . Let x represent the number of days, and y represent the depth of the snow in inches.
Answer:
4.5 inches
Step-by-step explanation:
Given:
y = -0.5x + 8
Where,
x = the number of days
y = the depth of the snow in inches
Find y when x = 7
y = -0.5x + 8
= -0.5(7) + 8
= -3.5 + 8
= 4.5
y = 4.5 inches
The depth of the snow in Hillary's front yard for 7 days is 4.5 inches
Find the value of r.
Answer:
r = 10.5
Step-by-step explanation:
using the Pythagorean theorem:
(7 + r)² = 14² + r²
49 + 14r + r² = 196 + r²
subtract r² from both sides of the equation:
14r + 49 = 196
subtract 49 from both sides:
14r = 147
divide both sides by 14:
r = 10.5
Which of the following is a prime number?
OA) 19
OB) 26
OC) 48
OD) 52
Answer:
A) 19
Step-by-step explanation:
prime number: Any whole number which is greater than 1 and has only two factors that is 1 and the number itself
A) 19 => 1 × 19 correct
B) 26 => 1 × 26, 2 × 13 incorrect
C) 48 => 1 × 48, 2 × 24, 3 × 16, 4 × 12, 6 × 8 incorrect
D) 52 => 1 × 52, 2 × 26, 4 × 13 incorrect
Write the missing value in the perfect-square trinomial.
y2 + ?y + 144
Answer:
Note that y² + 24y + 144
= y² + 12y + 12y + 12²
= (y+12)², so the missing value is 24
hope it helps
please mark Brainliest
Answer:
y²+24y+144hope it helps.
how do you find tax paid
Answer:
You can pay your personal and business taxes to the Canada Revenue Agency (CRA) through your financial institution's online banking app or website. Most financial institutions also let you set up a payment to be made on a future date.
Step-by-step explanation:
step by step
Answer:
Step-by-step explanation:
150000 +11000++43000+20+40=204,060
I need help really fast !!.
Answer:
Hello! Your answer would be, C)
Step-by-step explanation:
Hope I helped! Ask me anything if you have more questions! Have a nice mourning! Hope you make an 100%! -Amelia♥
Solve for x.
i will give brainiest please help
At the beginning of spring, Austin planted a small sunflower in his backyard.
When it was first planted, the sunflower was 25 inches tall. The sunflower
then began to grow at a rate of 3 inches per week. How tall would the
sunflower be after 6 weeks? How tall would the sunflower be after w weeks?
Answer:
After 6 weeks the sunflower would be 43 inches tall. After w weeks, the sunflower would be 25 + 3w tall.
7. A cell phone was marked at 40% above the cost price and a
discount of 30% was given on its marked price. Find the gain or
loss percent made by the shopkeeper.
K
Answer:
loss
Step-by-step explanation:
list all of the possible outcomes for randomly picking a number 1-5 and then flipping a coin
Answer:
1-5
outcomes:1,2,3,4,5.
coin
outcomes: heads and tails.
Step-by-step explanation:
Im sure this is self-explanitory
Find the area of this figure. Round to the hundredths place.
Answer:
30.5
Step-by-step explanation:
the answer is 30.5
Thomas paid $4.25 for three apples and four oranges. Five apples and two oranges cost Casey $4.75. Let x represent the number of apples and y represent the number of oranges. Which system of equations represents this situation? A $~3x+4y=4.75~$ $~5x+2y=4.25~$ B 3x+4y=4.25 5x+2y=4.75 C 4x+3y=4.75 2x+5y=4.25 D 4x+3y=4.25 2x+5y=4.75
Answer:
B
Step-by-step explanation:
For the given situation, system of equations is represented by
3x + 4y = 4.25
5x + 2y = 4.75
What is system of equations?"A system of equations is a finite set of equations for which we find the common solution."
According to question,
x represents number of apples
y represents number of oranges.
Two situations are given for which we need to find out which system of equations it represents.
Situation 1 : Thomas paid $4.25 for the three apples and four oranges , which can be represented by equation:
3x + 4y = 4.25
Situation 2: Casey paid $4.75 for five apples and two oranges, which can be represented by equation:
5x + 2y = 4.75
Hence we can conclude that Option B is correct.
Learn more about system of equations here
https://brainly.com/question/23291897
#SPJ2
I really need help this is hard
Answer:
y = 3x + 3
Step-by-step explanation:
Y intercept is 3 so that's at the end of the equation. Input the points and that equation fits.
What is the base of the expression 11^12?
3
11
12
21
Answer:
An exponential has the base at the bottom, or the lower portion. Think of "basement" to help remember this. The exponent is the number up top, so 12 is the exponent
therefore, the correct answer is 11
Answer:
The answer is B. 11
Step-by-step explanation:
11 is the base. 12 is the exponent. Hence why if it is worded, it is "11 to the power of 12"
Please help ty!
You need to hire a company to clean your house. Klean company has a fixed cost of $20 and charges $25/hour.
Dustbuster cleaning services, charges $35 per
hour.
a) Write the equations for both companies to calculate the cost of cleaning your house. Include "let" statements.
Answer:
Klean company = 20 + 25h
Dustbuster cleaning services = 35h
Step-by-step explanation:
Let
Number of hours = h
Equation to calculate the cost of cleaning your house
Klean company = 20 + 25h
Dustbuster cleaning services = 35h
Find the number of hours when the cost of cleaning house by both companies will be equal
Klean company = Dustbuster cleaning services
20 + 25h = 35h
20 = 35h - 25h
20 = 10h
h = 20/10
h = 2 hours
Number of hours = h = 2 hours
PLEASE HELP ME I WILL GIVE BRAINLIEST
ΔTSMis translated so that
T (4,1) →T’(0, 4)
S(3,-1) →S’(-1, 2)
M(6,-4)→M’(2, -1).
What is the rule for this translation?(1 pt.)
-11
[tex] {142764371}^{?} [/tex]
A rectangle has a length of 2 m and a width of 40 cm what is the perimeter of the rectangle ( show your work)
Answer:
0.05 im pretty sure to my calcutor
Step-by-step explanation:
The dimentionsof the rectangular prisim shown are given im centameters what is the volume of the prism
Complete question :
The dimensions of a right rectangular prism are 1.5 cm, 0.5 cm and 2. 25 cm.
What is the volume of the prism?
A. 0.75 cm
B. 1.6875 cm
C. 3.375 cm
D. 4.25 cm
Answer:
1.6875 cm³
Step-by-step explanation:
Given the dimension :
1.5 cm by 0.5 cm by 2.25 cm
The volume of a rectangular prism is given by :
Volume = Length * width * height
Volume, V = 1.5cm * 0.5cm * 2.25cm
Volume of prism = 1.6875 cm³
Hence, the volume of the rectangular prism is 1.6875 cm³