Answer:The ratio of the number of children who can swim to the number of children who cannot swim=2:1
Step-by-step explanation:
Number of children that can swim = N umber of boys and girls that can swim =23+17 =40
Number of children that cannot swim = N umber of boys and girls that cannot swim=9+11=20
=40:20
=2:1
Marty bought a piece of material that was 68 yard long and a piece that was 48 yard long. Which statement is TRUE? A. 48> 68 B. 68< 48 C. 68> 48 D. 48= 68
Answer:
C
Step-by-step explanation:
68 is bigger than 48...
The expression 16t² represents the distance, in feet, an object falls after t seconds. The object is dropped from a height of 906 feet.
Complete Question:
The expression 16t² represents the distance in feet an object falls after t seconds. The object is dropped from a height of 906 feet. What is the height in feet of the object 2 seconds after it is dropped?
Answer:
H(2) = 842 feet
Step-by-step explanation:
Let the height be H.
Given the following data;
H(t) = 16t²
Height, H = 906 feet
Time, t = 2 seconds
To find the time, t at 2 seconds, we would use the following formula;
H(t) = H - 16t²
H(2) = 906 - 16(2)²
H(2) = 906 - 16*4
H(2) = 906 - 64
H(2) = 842 feet
Therefore, the height in feet of the object 2 seconds after it is dropped is 842.
Image is above! :)
What is the equation of the line in slope-intercept form?
Write your answer using integers, proper fractions, and improper fractions in simplest form.
Answer:
y = 6x
Explaination:
slope intercept form is just y=mx+b, and since the slope is 6, you plug 6 into m, and then the y-intercept is 0, so you can drop it out of the equation
Kevin mows lawns for $9.25. He has already earned $63. How many hours does he need to work to earn $100?
Answer:
he has to work 4 more hours.
Step-by-step explanation:
63-100=37
37÷9.25=4
(i will give the brainlyist please help) The solution to the system is (3, 4);
30 – 2y = 1
4y= 7 + 3
True
False
Answer:
true
Step-by-step explanation:
first and second one both make sense
There are 48 cards un a pack and each card is either red or black. The ratio of the number of red cards to the number of black cards is 1:1 8red cards are removed from the pack Find the ratio of the number of red cards now in the pack to the number of black cards now in the pack Give ur answer in its simplest form
Answer:
2:3
Step-by-step explanation:
48=8x6
48/2=24
24-8=16
16:24
16/2=8
24/3=8
2:3
Find the volume of the prism.
A drawing of a rectangular prism. It has length three-fourths meter, width one-half meter and height start fraction five over eight end fraction meter.
The volume is ____
cubic meters.
Answer:
V = 15/64 or 0.23
Step-by-step explanation:
Formula:
V = lwh
[tex]\frac{5}{8} *\frac{1}{2} *\frac{3}{4} \\V = \frac{15}{64}[/tex]
please give me the answer ill mark u brainliest
which sequence shows the number in order from least to greatest?
please help
What is 2x-5=15 justified
Step-by-step explanation:
2x-5+5=15+5
2x= 20
X=10
Answer:
X=10
Step-by-step explanation:
2 x − 5 = 15
2 x = 20
x = 10
Hope this helps! Have a great day. Remember your amazing and you got this! Alycia <3
Problem
There are 7 students in a class: 2 boys and 5 girls.
If the teacher picks a group of 3 at random, what is the probability that everyone in the group is a girl?
Answer:
2/7
Step-by-step explanation:
The total number of possibilities is 7 * 6 * 5
The number of possibilities for all girls is 5 * 4 * 3
so the probability is:
[tex]\frac{5*4*3}{7*6*5} \\\frac{4*3}{7*6} \\\frac{12}{42} = \frac{2}{7}[/tex]
i will give brainiest to the first one
aurora scored 572 marks out of 650 belle scored 450 out of 500 for the annual examination.
a. who performed better and by how much.
b .what percentage she scored
Step-by-step explanation:
a. Belle as she only missed 50 questions where as Aurora missed 78. (500-450) and (650-572)
b. Belle scored 90% (450/500=0.9)
Answer:
a. Belle scored better, by scoring 2% more than Aurora.
b. She scored 90%
Step-by-step explanation:
Make your denominator out of a 100
So you will divide by 6,5
572÷6,5/650÷65
= 88/100
=88%
And divide the other by 5
450÷5/500÷5
=90/100
=90%
In ΔTUV, the measure of ∠V=90°, the measure of ∠U=85°, and VT = 20 feet. Find the length of TU to the nearest tenth of a foot.
Answer: 20.1
Step-by-step explanation: I if you are here from delta math this is the answer
Answer: 20.1
Step-by-step explanation:
sinU=
hypotenuse
opposite
=
x
20
\sin 85=\frac{20}{x}
sin85=
x
20
x\sin 85=20
xsin85=20
Cross multiply.
\frac{x\sin 85}{\sin 85}=\frac{20}{\sin 85}
sin85
xsin85
=
sin85
20
Divide each side by sin 85.
x=\frac{20}{\sin 85}=20.0764\approx 20.1\text{ feet}
x=
sin85
20
=20.0764≈20.1 feet
Type into calculator and roundto the nearest tenth of a foot.
T
U
V
20
20.1
(opposite of ∠U)
(adj. to ∠U)
(hypotenuse)
85°
help with finding g(f(x))
f(x) = x squared - 3x + 2
g(x)= x+2
Answer:
=x+2
Step-by-step explanation:
Answer:
g(f(x)) = x² - 3x + 4
Step-by-step explanation:
Substitute x = f(x) into g(x) , that is
g(x² - 3x + 2)
= x² - 3x + 2 + 2
= x² - 3x + 4
Solve for x
4x = 51
1. x = 204
2. x = 47
3. x = 12.75
Answer:
#. x=12.75
Step-by-step explanation:
51/4
I NEED HELP FAST PLEASE! The measures of the angles of a triangle are shown in the figure below. Find the
measure of the smallest angle.
(3X-9°
(x+15)

Someone plz help me plz
Answer:
i woyld say 1/3 and 2/5
Step-by-step explanation:
they aer bigger parts then the other
Answer:
if you find both areas and compare them with a common denominator youll see that 8/15 and 1/6 is greater .
In ΔNOP, the measure of ∠P=90°, the measure of ∠N=7°, and NO = 3.4 feet. Find the length of OP to the nearest tenth of a foot.
Answer:
0.4
Step-by-step explanation:
I did it on deltamath
Answer:
x=0.4144≈0.4 feet
Step-by-step explanation:
Deltamath
i just don’t understand how to do the half circle part. so if you could just give me that number i can do the rest.
Answer:
the radius of the circle is 5 and you find the raidus of the circle by using the formula A= (pi)r squared. then you'd divide that answer by two. :)
Step-by-step explanation:
Ariana made cookies. She used 3 7/8 cups of flour and 2 1/8 cups of sugar. How much more flour than sugar did Ariana use?
Answer:
1 6/8 cups of flour
Step-by-step explanation:
Just subtract 2 1/8 from 3 7/8
Express (x+1) (x+1) as a trinomial in standard from
Answer:
x^2 + 2x + 1
Step-by-step explanation:
(x + 1)(x + 1) = x^1 + x + x + 1 = x^2 + 2x + 1
Answer:
x² + 2x + 1
Step-by-step explanation:
(x+1)(x+1)
x² + 1x + 1x + 1
Solve the equation, Write one solution, No solution, Infinitely Many Solution
5. 2.5 x + 20 = 25
Answer:
x= 2
Step-by-step explanation:
Subtract 20 from both sides
2.5x + 20 − 20 = 25 − 20
2.5x= 5
Divide both sides by 2.5
2.5x/2.5= 5/2.5
x= 2
After 4 days, a bookstore has 140 copies of a new title still on hand. After 9 days, the bookstore has 50 copies still on hand. Model this situation by writing an equation of the form c(t)=mt+b where c is the number of copies still on hand after t days of being available
Answer:
[tex]c(t) =-18t +212[/tex]
Step-by-step explanation:
Given
[tex](t_1,c_1) = (4,140)[/tex]
[tex](t_2,c_2) = (9,50)[/tex]
Required
Determine the equation
First, we calculate the slope (m)
[tex]m = \frac{c_2 - c_1}{t_2 - t_1}[/tex]
[tex]m = \frac{50 - 140}{9-4}[/tex]
[tex]m = \frac{-90}{5}[/tex]
[tex]m = -18[/tex]
The equation is then calculated as:
[tex]c =m(t - t_1) + c_1[/tex]
[tex]c =-18*(t - 4) + 140[/tex]
[tex]c =-18t +72 + 140[/tex]
[tex]c =-18t +212[/tex]
Hence, the function is:
[tex]c(t) =-18t +212[/tex]
find the radius of the circle having circmference 88 cm
Answer:
14
Step-by-step explanation:
just find the radius using 2*22/7*r
Please Help me ive posted this like 8 times !!!!!
The freshman class of 175 students went on a field trip. For transportation, they needed both vans (which hold 5 students each) and buses (which hold 35 students each). There was a total of 11 vehicles used.
How many of each type of vehicle did they use?
Vans: _________________
and
Buses _________________
.
Answer:
You will need 7 vans and 4 buses
Step-by-step explanation:
7 vans would take care of 35
4 buses would take care of 140 kids
and it uses a total of 11 vehicles
Hope this helps
Answer:
Vans = 7
Buses = 4
Step-by-step explanation:
x = vans
y = buses
x + y = 11 (1)
5x + 35y = 175 Divide this equation by 5
x + 7y = 35 (2)
============
Subtract (1) from (2)
x + 7y = 35
x + y = 11
6y = 24 Divide by 6
6y/6 =24/6
y = 4
===========
x + y = 11
x + 4 = 11
x = 11 - 4
x = 7
Now Let's check it
x is the number of vans which holds 5 students each
7 * 5 = 35
y is the number of buses which holds 35 students each
4 * 35 =140
Total number of students = 35 + 140 = 175
So it checks.
Plz answer if u really know it thanks so much
[tex] \sqrt{18} - \sqrt[x]{2 } = \sqrt{32} [/tex]
solve for x
Lenora wants to build the bike ramp shown. Find the length of the base of the ramp.
Answer:
te lenght was base of the ramp
HELP!! I NEED HELP ASAP
In ΔMNO, the measure of ∠O=90°, the measure of ∠N=62°, and NO = 66 feet. Find the length of MN to the nearest tenth of a foot.
Answer:
140.6 feet
Step-by-step explanation:
In ΔMNO, the measure of ∠O=90°, the measure of ∠N=62°, and NO = 66 feet. Find the length of MN to the nearest tenth of a foot.
Step 1
We have to find Angle M
Sum of angles in a triangle = 180°
M + N + O = 180°
M = 180° - ( N + O)
M = 180° - ( 90° + 62°)
M = 28°
Step 2
We find the length of MN
We solve using Sine rule
MN/sin O = NO/sin M
MN/sin 90 = 66/sin 28
Cross Multiply
MN = sin 90 × 66/sin 28
MN = 140.58 feet
Approximately = 140.6 feet
