Answer:
9
Step-by-step explanation:
Jimmy runs 8 meters per second. His little brother runs 3 meters per second so is given a 40 meter head start. How long will it take Jimmy to catch his little brother? How far into the race will this be?
Answer:
8 Seconds
Step-by-step explanation:
Since Jimmy runs 8 meters per second, we can multiply 8x8 to find where he will be after 8 seconds.
8x8 = 64
Since Jimmy's little brother runs 3 meters per second, we can multiply 3x8 to find where he will be after 8 seconds.
3x8 = 24
But, remember, Jimmy's little brother had a 40 meter head start. So we have to add 40 to his total.
24+40 = 64
Since Jimmy and his little brother's totals are both the same, Jimmy will catch up to his little brother after 8 seconds.
A rock is thrown down from a cliff that is 180 m high. The function
h(t) = -5t^2 – 10t + 180 gives the approximate height of the rock
above the water, where h(t) is the height in metres and t is the time
in seconds. When will the rock reach a ledge that is 105 m above
the water?
Answer:
t = 3
Step-by-step explanation:
105 = -5t^2 -10t + 180
-75 = -5t^2 -10t
15 = t^2 +2t
t^2 +2t -15 = 0
(t+5)(t-3)
t = -5, 3
There's no such thing as negative time so you use the positive answer
On a blueprint, the diagram of a building has a height of 25 cm.
The height of the building is x times the height of the diagram.
Which equation represents the height, h, of the building?
h = 25 : x
B
x = 25h
h = 25 + x
h = 25x
Answer:
h = 25x
Step-by-step explanation:
Given the following
height of building = h
height of diagram = 25cm
If the height of the building is x times the height of the diagram, then;
h = x * 25
h = 25x
Hence the required equation is h = 25x
An athlete eats 55 grams of protein per day while training. How much is this in milligrams?
Answer:
55,000 milligrams
Step-by-step explanation:
........
Answer:
55,000 milligrams (mg) is equal to 55 grams (g)
Step-by-step explanation:
(55 g/1 )* (1000 mg/1 g)
Multiply the top to get 55,000 and the bottom to get 1.
55,000/1
The gram units cancel out, leaving you with milligrams.
55,000 mg
30 pts Answer as many as u can plz Math is fun in its own way but i'm tired and...ya
-A hoodie is on sale for $48. This sale price is 80% of the original price. What was the original price of the hoodie?
-Chris and Alex scored 46% of their team's points in last week's soccer game. The team scored a total of 50 points. How many points did Chris and Alex score?
-Penelope has $3.00 in her wallet. This is 20% of her allowance. What amount is her allowance?
-The PE classes collected canned food for a food drive last Thanksgiving. The goal was to collect 600 cans. They collected 1800 cans. What percent of their goal did they reach?
Lexington and Louisville, KY are 75 miles apart. If the scale on the map is 1 cm = 5 mi, find the distance on the map between the two cities.
Answer:
15 cm
Step-by-step explanation:
75 miles / 5 miles = 15
15 * 1 centimeter = 15 cm
what is 2/3 as a decimal rounded to put in a Calculator?
Answer:
0.66
Step-by-step explanation:
I’m stuck on this! I need help
Answer:
I believe the answer is 20.35 x [tex]10^{4}[/tex].
Step-by-step explanation:
Plz, help if you are an expert at math. his lesson is called "Equations with variables on both sides" thanks
Answer:
solve the equation by multiplying and arranging.
Step-by-step explanation:
I didn't saw the question properly but I think it's the right question.
The yearbook team is designing the pages for school clubs so
that the layouts are all the same. The dimensions shown are ir
inches. Different team members think about the total area of
the page in different ways.
a. Paulo thinks of the area of the page as the product
of the total length and the total width.Complete Paulo's expression. (_____+3)*(4+_____)
Answer:
creo que sería 54 por actitud de :72-1 1?? por eso sería esta cosa esxtactamente espero que te allá ayudado
Kellie is purchasing the package of dog food shown (dog kibble 7pounds) how many 8 ounce servings can she feed her dog
Answer:
14 servings
Step-by-step explanation:
Step 1
We convert 7 pounds to ounces
0.0625 pound = 1 ounce
7 pounds = x
Cross Multiply
0.0625x = 7
x = 7/0.0625
x = 112 ounces
Step 2
The number of 8 ounce servings she can give to her dog is calculated as:
8 ounces = 1 serving
112 ounces = x servings
Cross Multiply
8 × x = 112 × 1
8x = 112
x = 112/8
x = 14 servings
Therefore, the number of 8 ounce servings she can feed her dog is 14
The perimeter of a rectangle is 48cm. It's length is 4cm. What is it's width?
Answer:
The width is 20cm
Step-by-step explanation:
4 + 4 = 8
48 - 8 = 40
40 ÷ 2 = 20cm
8x+7x+5+4= 39 pls help quickly
Answer:
x = 2
Step-by-step explanation:
8x + 7x + 5 + 4 = 39
15x + 9 = 39
15x = 30
x = 2
Brainly plz :))
Maine has a cold climate in the winter. Which statement about the probability of temperatures falling below 32°F in Maine during the month of January is most likely true? The probability is closer to 1 than to 0. The probability cannot be determined before February. The probability is 100. The probability could be -1.
Answer:
the probability is 100
this is the most suitable ans
WILL MARK BRAINLIEST!
Please help! What's the simplified expression? Explain why!
Answer:
625^3
Step-by-step explanation:
5*5*5*5=25*5*5=25*25=625
625^3 is the final answer
Forty students went on a trip on Wednesday. On Thursday, 15% less students went on a similar trip. How many students went on the trip on Thursday?
Answer:
34
Step-by-step explanation:
40 * .15= 6
40-6 = 34
okkk so you do 40 * .15 because you just put a decimal point before all percentages to convert it into number
40*.15= 6
then subtract 6 to the original amount
40-6=34
34 students went on the trip on thursday cause 6 students got killed by bears in the last trip.
what is 4.059 divided by 1,000
Answer:
0.004059
Step-by-step explanation:
You can use a calculator and if it comes out in fraction form, press the fraction to decimal button.
Answer:
0.004059
Brainly please
Find the area of the figure. Round your answer to the nearest tenth.
Answer:
11.5 m^2
Step-by-step explanation:
The area of a parallelogram is base * height, so you have to find the height.
You can see on the left there's a 30 - 60 - 90 triangle with a hypotenuse of 4. Using the proportion rule, you know that the 2nd side is 4/[tex]\sqrt{3}[/tex] = [tex]4\sqrt{3}/3[/tex].
Then, find the area, so do base * height = 5 * [tex]4\sqrt{3} /3[/tex] = [tex]20\sqrt{3}/3[/tex].
Put this in a calculator and you get: 11.5 m^2
Given: E is the midpoint of overline BD and overline AC perp overline BD .
Prove : triangle BAE cong triangle DAE .
Answer:
u can prove using SAS congruency
Step-by-step explanation:
Ae=Ae common
BE=DE (E MID POINT)
Angle E=angle E (90 degree)
The ΔBAE is congruent to ΔDAE.
Given to us,
E is the midpoint of ,
AC⊥ BD,
As given E is the midpoint of the line [tex]\overline{BD}[/tex],
So, BE = ED,
further, line AE = AE, because this is the common line between the two triangles.
Also, ∠BED =∠DEA =90°, as AC⊥ BD.
Therefore, the ΔBAE is congruent to ΔDAE.
To know more visit:
https://brainly.com/question/1446688
8.
If A= {x:xis a factor of 72}
B= {x:%2x+3<2x-3).
C= {x:x<20} and A,B,Ccu.
Where u = {integers), list the
elements of AnBnc.
that small c is subset and the small n is intersection set
Answer:
{2, 3, 4, 6, 8, 9, 12, 18}
Step-by-step explanation:
If A= {x: xis a factor of 72}
A = {2, 3, 4, 6, 8, 9, 12, 18, 36, 72}
If B= {x: 2x+3<2x-3).
-2x+3 <2x-3
-2x - 2x < -3-3
-4x < -6
x > 3/2
If
C= {x:x<20}
C = {-∞, 19}
The intersection of the sets AnBnc = {2, 3, 4, 6, 8, 9, 12, 18}
Note that intersection means all the elements common to the three sets
help please
solve for x
Answer:
X = 60°
Step-by-step explanation:
the angle you are looking for is a corresponding angle to the angle given (121°)
2x + 1 = 121
121 - 1 = 2x
121 - 1 = 120
2x = 120
120/2 = 60
X = 60
Can someone help me pls and thank you!
Answer:
yes
Step-by-step explanation:
if you add 2+3 it will be five and 6+5 equals 11 so yes
Answer:
Yes.
Step-by-step explanation:
6+2+3=11
8+3=11
Therefore, both equations are equal.
carsen loves to run. she runs 4 miles each day if she wants to run a total of 56 miles how many days shoukd she run? whrite an equation to show this problem along with the answer
Answer:
the answer mia 14days
Step-by-step explanation:
56divided by 4 equals 14
3(16 - 4 x 3) + 7 =???
Answer:
-36x+55
Step-by-step explanation:
3(16−4x(3))+7
=(3)(16)+(3)(−12x)+7
=48+−36x+7
next you have to combine like terms
=48+−36x+7
=(−36x)+(48+7)
=−36x+55
x + y = 3
x^2 + y^2 = 5
Solve
Answer:
(1, 2 ), (2, 1 )
Step-by-step explanation:
Given the 2 equations
x + y = 3 → (1)
x² + y² = 5 → (2)
Rearrange (1) expressing y in terms of x by subtracting x from both sides
y = 3 - x → (3)
Substitute y = 3 - x into (2)
x² + (3 - x)² = 5 ← expand and simplify left side
x² + 9 - 6x + x² = 5
2x² - 6x + 9 = 5 ( subtract 5 from both sides )
2x² - 6x + 4 ( divide through by 2 )
x² - 3x + 2 = 0 ← in standard form
(x - 1)(x - 2) = 0 ← in factored form
Equate each factor to zero and solve for x
x - 1 = 0 ⇒ x = 1
x - 2 = 0 ⇒ x = 2
Substitute these values into (3) for corresponding values of y
x = 1 : y = 3 - 1 = 2 ⇒ (1, 2 )
x = 2 : y = 3 - 2 = 1 ⇒ (2, 1 )
Nate's weekly pay increased from $710 to $770. Which of the following is closest to the
percent that his pay increased?
(1) 7.2%
(2) 8.5%
(3) 7.8%
(4) 8.9%
Answer:
The answer is 8.5 hope this helped.
Help with this plz ASAP
Answer:
slope is 2 rise, 1 run
-4 is the y intercept
y= 2/1 + -4
Step-by-step explanation:
I hope I wasn't helping I cheat ;-;
u can check this over later
Write in Slope Intercept form
Answer:
y=5/2x
Step-by-step explanation:
the y intercept is (0,0) so it isn't included in the equation. now we know the middle solution isn't correct. the points we use to find slope are (-2,-5) and (2,5) which ends up being 5/2.
3. Find the surface area for the given cylinder. Use 3.14 for r and round to the nearest whole number. (1 point)
A. 904
B.1,017
C.1,130
D.2,713
Answer:
C
Step-by-step explanation:
The surface area of a cylinder is given by the formula:
[tex]SA=2\pi rh+2\pi r^2[/tex]
Where h is the height and r is the radius of the cylinder.
The given radius is 6 and the height is 24.
We are also using 3.14 for π.
Therefore;
[tex]SA\approx 2(3.14)(6)(24)+2(3.14)(6)^2[/tex]
Evaluate:
[tex]SA\approx1130.4\approx 1130[/tex]
The answer is C.
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