there are 13 boys and 10 girls in the classroom. What is the ratio of boys to girls
Answer:
13 to 10 13:10 13/10 all the same.
it can't be simplified because 13 can't be made smaller in equal proportions to 10.
Step-by-step explanation:
Answer:
13 to 10
Step-by-step explanation:
I haven't done this since 2nd grade
Can someone help me with this ? Not really sure how to solve it, I'll give brainliest too !
Answer: y=5x+4
Step-by-step explanation:
Remember this
Slope-Intercept form: y=mx+b
m is the slope (5)
b is the y-intercept (4)
So your equation is
y=5x+4
Answer:
y = 5x + 4
Step-by-step explanation:
y - 4 = 5(x - 0)
That is point-slope form. I'm not sure if you want it in slope-intercept form, but the slope-intercept form of the equation is -
y = 5x + 4
List all possible rectangles that can be formed by cross-sectional cuts within the prism, through 4 of the 8 vertices.
Answer:rectangular pyramid
Step-by-step explanation:The cross section is a rectangle. Note that not all cross sections of a rectangular prism are rectangles. Figure 4 shows the cross section of a right rectangular pyramid parallel to its base.
(i have no idea if this is right or not i learned this form my teacher.)
Answer:
you is
Step-by-step explanation:
At Janice's current age she is not only 5 times as old as Ross, but she is also 28 years older than Ross. How old is Janice?
Janice's age is 35 years.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
Ross age = x
Now,
Janice age = 5x ____(1)
Janice age = x + 28 _____(2)
From (1) and (2),
5x = x + 28
5x - x = 28
4x = 28
x = 7
Now,
Janice age.
= 5 x 7
= 35
Thus,
Janice's age is 35 years.
Learn more about expressions here:
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Gerry drives her car at a constant rate of 60 miles/hour. How far will Gerry drive in 25 hours?
Answer:
The answer is 1500
Step-by-step explanation:
I multiplied 60 by 25
Answer:Its 1500
Step-by-step explanation:60 x 25
Graph f(x)=4x2+20x+16
Direction: Opens Up
Vertex:
(
−
5
2
,
−
49
)
Focus:
(
−
5
2
,
−
783
16
)
Axis of Symmetry:
x
=
−
5
2
Directrix:
y
=
−
785
16
Select a few
x
values, and plug them into the equation to find the corresponding
y
values. The
x
values should be selected around the vertex.
Tap for more steps...
x
y
−
4
−
40
−
3
−
48
−
5
2
−
49
−
1
−
40
0
−
24
Graph the parabola using its properties and the selected points.
Direction: Opens Up
Vertex:
(
−
5
2
,
−
49
)
Focus:
(
−
5
2
,
−
783
16
)
Axis of Symmetry:
x
=
−
5
2
Directrix:
y
=
−
785
16
x
y
−
4
−
40
−
3
−
48
−
5
2
−
49
−
1
−
40
0
−
24
image of graph
I have four questions if you will answer them I will Venmo you $10
directions: make sure to change all problems 1 - 4 from standard form to slope intercept form and find the solution of each system of equations make sure to show your work to receive full credit
Find the area of the figure to the nearest hundredth.
Answer:
51.26 ft
Step-by-step explanation:
First find the area of the triangle:
a=1/2 base times height
a=(1/2)(6)(4)
a=12 ft
Now find the area of the circles:
a= pi times radius squared
a= pi times 2.5 squared
a=19.63 ft
19.63 + 12 = 31.63 ft
The area of two similar triangles are 50dm^2 and 32dm^2. The sum of their perimeters is 117dm. What us the perimeters of each of these triangle?
Answer:
Perimeter of one triangle is 65 dm
Perimeter of other triangle is 52 dm
Step-by-step explanation:
Please remember the concept
If sides are in the ratio of a:b
Then the area in the ratio of [tex]a^{2} :b^{2}[/tex]
It is given sum of their perimeter is 117.
Let the small triangle has perimeter as x.
So, perimeter of big triangle is 117-x.
So, we can set up equation as
[tex]\frac{50}{32} =\frac{x^{2} }{(117-x)^{2} }[/tex]
Cross multiply
50(117-x)^2 =32x^2
Expand the left side
50[tex](13689 -234x+x^{2} )[/tex]=[tex]32x^{2}[/tex]
Distribute the left side
684450-11700x+[tex]50x^{2}[/tex]=[tex]32x^{2}[/tex]
Subtract both sides [tex]32x^{2}[/tex] and rewrite it [tex]18x^{2} -11700x+684450=0[/tex]
Solve this quadratic for x.
Divide both sides of the equation by 18 to simplify.
[tex]x^{2}[/tex]-650 x+38025=0
Now, if possible let's factor
Find two integers whose multiplication is 38025 but adds to -650.
-65 and -585 works.
So, we can rewrite it as
(x -65)(x-585) =0
Solve them using zero product property
x=65, x=585
So, x=65 works here.
So, perimeter of one triangle is 65 dm
Perimeter of other triangle is 117-65= 52 dm
Explain how to find the slope and y-intercept by just looking at the equation
y = x - 2. Then graph the equation and verify your answers.
whats 9.125 estimated?
Answer:
9
Step-by-step explanation:
9.125 rounded to the nearest number is 9
If this helps please mark this answer as the brainliest
Answer:
9.000
Step-by-step explanation:
I think it is 9.000 because the number is below is 5 which means you round down which will give you 9.000
I hope this helps;)
(not %100 sure)
Lydia invested $5900 in an account paying an interest rate of 2 5/8% compounded monthly. Jace invested $5900 in an account paying an interest rate of 2 1/8% compounded continuously. After 19 years how much more money would lydia have in her account than jace to the nearest dollar.
Answer:
$875.18
Step-by-step explanation:
Given data
Lydia
P=$5900
Interest rate=2 5/8% >>21/8= 2.625%
compounded monthly.
First, convert R percent to r a decimal
r = R/100
r = 2.625%/100
r = 0.02625 per year,
Then, solve our equation for A
A = P(1 + r/n)^nt
A = 5,900.00(1 + 0.0021875/12)^(12)(19)
A = $ 9,710.01
Jace
P=$5900
Interest rate= 2 1/8% >>> 17/8>> 2.125%
Time= 19 years
First, convert R percent to r a decimal
r = R/100
r = 2.125%/100
r = 0.02125 per year,
Then, solve our equation for A
A = Pert
A = 5,900.00(2.71828)^(0.02125)(19)
A = $ 8,834.83
Hence the difference in their account balance is
= 9,710.01- 8,834.83
=$875.18
Therefore Lydia has $875.18 more money than Jace
Answer: $875
Step-by-step explanation: $875.18
How many do you want to bet nobody’s not gonna held me on this question
Answer:
-209
Step-by-step explanation:
For geometry please help
If the middle term of a quadratic trinomial is negative and the last term is negative, then
the sum of the factors for the middle term must be __
Answer:
Negative
Step-by-step explanation:
Years of Factoring:
What the problem tells us is that we have:
X^2 - 4x - 3
or something along these lines. If we factor this we get:
(X-4)(X+1)
The bigger inside factor has to be negative for these problems, because the third term is negative.
The sum of the middle term must give a negative value.
What is a quadratic equation?A quadratic equation is a polynomial with a degree of 2 or the maximum power of the variable is 2 in quadratic equations. It has two solutions as its maximum power is 2.
Given that If the middle term of a quadratic trinomial is negative and the last term is negative then the sum of the middle terms must give a negative value.
What the problem tells us is that we have:
x² - 4x - 3
Something along these lines. If we factor this we get:
(x-4)(x+1)
The bigger inside factor has to be negative for these problems because the third term is negative.
Therefore, the sum of the middle term must give a negative value.
To know more about quadratic equations follow
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A health insurance plan costs $150 each month plus an extra $25 for each doctor's visit. Which equation
below models the total yearly cost, c, of the plan
as a function of the number of doctor's visit, n?
Answer:
c=150+25n
Step-by-step explanation:
Given data
Monthly cost= $150
cost per doctor's visit= $25
Let the number of visits be n
Hence the total cost c can be modeled as
[tex]c=150+25n[/tex]
it takes a word processor 28 minutes to word process and spell check 10 pages. Find how long it takes her to word process and spell check 45 pages.
HELP FOR BRAINIEST!!
Please write each equation in Slope-Intercept Form!
Answer:
y=-2/3x-3 is the equation in slope intercept form
Step-by-step explanation:
Hope this helps (:
hlep plz i need your help brainly
Answer:
2 cm and 7 cm
Step-by-step explanation:
6/3 and 21/3 = 2 and 7
30 kg of tomatoes cost $93. how much would 14 kg cost
Answer:
$43.4
Step-by-step explanation:
Let's say x is the cost per kilgram
30x = 93
x = 3.1
14x = 43.4
b increased by 250% compared to 2b decreased by 50%
Answer:
$a decreased by 25% and $1.2a decreased by 40%
$a decreased by 25% = 0.75a
1.2a decreased by 40% = 0.6*1.2a = 0.72a
2) $b increased by 250% and $2b increased by 50%
$b increased by 250% = 2.5b
$2b increased by 50% = 1.5*2b = 3b
Answer:
b increased by 250% is equal to 2b decreased by 50%
$b increased by 250% > $2b increased by 50%
The doubling period of a bacterial population is 15 minutes. At time t= 80 minutes, the bacterial population was 90000
Answer:
here i finished!
hope it helps yw!
Step-by-step explanation:
The doubling period of a bacterial population is 15 minutes.
At time t = 90 minutes, the bacterial population was 50000.
Round your answers to at least 1 decimal place.
:
We can use the formula:
A = Ao*2^(t/d); where:
A = amt after t time
Ao = initial amt (t=0)
t = time period in question
d = doubling time of substance
In our problem
d = 15 min
t = 90 min
A = 50000
What was the initial population at time t = 0
Ao * 2^(90/15) = 50000
Ao * 2^6 = 50000
We know 2^6 = 64
64(Ao) = 50000
Ao = 50000/64
Ao = 781.25 is the initial population
:
Find the size of the bacterial population after 4 hours
Change 4 hr to 240 min
A = 781.25 * 2^(240/15
A = 781.25 * 2^16
A= 781.25 * 65536
A = 51,199,218.75 after 4 hrs
Each tape diagram represents I whole.
1
3
2
H
Choose the tape diagram that represents the equation,
Choose 1 answer:
?+ ?
? + ?
Hi! From what I know, your answer should be 5n = 1.75.
This is because all 5 of those n's ultimately equal the large box of 1.75 on the top. Think of it as fractions. if we replaced 1.75 with 1, those n's would each be 1/5.
What is the unit rate for the ratio 288Points/6 Games
A bag contains 5 back marbles 10 red marbles and 20 blue marble which statement is true
Manny is paid semimonthly. His semimonthly salary is $1,239. What is his annual salary?
Answer:
Semimonthly is twice a month. There are 12 months in a year, which means Manny will get paid 12 x 2 = 24 times a year.
His annual salary is:
$1,239 x 24 = $29,736
if you can help that will be great
Answer:
The game (including tax) would cost $31.80
Step-by-step explanation:
6% of 30.00 is 1.8 so sales tax would be $1.80
$30.00 + $1.80 = $31.80
Answer:
$31.8
Step-by-step explanation:
here's your solution
=> Cost of video game = $30
=> sale tax = 6%
=>now we need to calculate 6% of $30
=> 6/100*30 = $1.8
=> sale tax = $1.8
=> cost of video game including tax = $30 + $1.8
=> $31.8
hope it helps
In ΔBCD, the measure of ∠D=90°, the measure of ∠B=8°, and BC = 6.4 feet. Find the length of DB to the nearest tenth of a foot.
Answer:
6.3
Step-by-step explanation:
Answer:
6.3 feet
Step-by-step explanation:
cosB= hypotenuse/adjacent = x/6.4
cos8 = x/6.4
6.4 cos8= x
x= 6.3377 = 6.3 feet
PLEASE HELP ASAP 1-5 THANK YOU!!!
Answer:
1a
2c
3c
4a
5d
hope this helps
Step-by-step explanation:
Answer:
1. $120
2. 8 hours
3. $15
4. $30/hr
don't know what #5 is
X+5/-2=x-10/7
What does x=