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Tasya [4]
3 years ago
13

Only answer if you are 100% sure

Mathematics
1 answer:
Hatshy [7]3 years ago
8 0

Answer:

t=\frac{x}{v} = \frac{234 miles}{70 miles/h} = 3.34 h

t= 03:21 h

Step-by-step explanation:

A constant speed means that it does not change over a period of time and direction of motion. A simple formula, for this case (constant speed)

v =\frac{x -xo}{t-to} where x is distance and t time. The subtract is final value minus initial value

If xo=0 miles and to=0 h, then

v=\frac{x}{t}

We have distance, and speed so we need to calculate the time (how long)

t=\frac{x}{v} = \frac{234 miles}{70 miles/h} = 3.34 h

t= 03:21 h

reference :https://www.timecalculator.net/time-to-decimal

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In which of the options below will the number 3 correctly fill in the blank. Select all that apply. A) ___ : 4 = 12 : 16 B) 1 :
aniked [119]

Answer:

A and B

Step-by-step explanation:

Given

List of given options

Required

Which will correctly take 3 to fill the blank

Represent the blanks with x

Option A:

x : 4 = 12 : 16

Convert to fractions

\frac{x}{4} = \frac{12}{16}

Multiply through by 4

4 * \frac{x}{4} = 4 * \frac{12}{16}

x = \frac{48}{16}

x = 3

Option B:

1 : 5= x : 15

Convert to fraction;

\frac{1}{5} = \frac{x}{15}

Multiply through by 15

15 * \frac{1}{5} = \frac{x}{15} * 15

15 * \frac{1}{5} = x

3 = x

x = 3

Option C:

x : 1 = 12 : 3

Convert to fraction

\frac{x}{1} = \frac{12}{3}

x = 4

Option D

15:x = 3:1

Convert to fraction

\frac{15}{x} = \frac{3}{1}

Cross Multiply

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3 * x = 15

Divide through by 3

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From the above calculations.

<em>Option A and B can be filled with 3</em>

5 0
3 years ago
257 sci cu grau si 97 saci cu porumb cantaresc 14.480,iar 349 saci cu grau si 97 saci cu porumb cantaresc 18.344 kg.Sa se afle c
Goryan [66]
Do u add or what I don’t understand but 257+97=345
6 0
3 years ago
PLEASE HELP ITS MATH
faltersainse [42]

Answer:

y = 4x + 3

Step-by-step explanation:

as the line is parallel to the given equation, the gradient (4x) must stay the same, and as it must pass through the point (-2, -5), we can solve for the y intercept:

to calculate for the y intercept, it is best to express the equation in slope intercept form:

y = mx + b

in this equation, mx stands for the gradient, which ive already highlighted remains 4x, and b stands for the y intercept (which we don't know yet).

y = 4x + b

what we have been given instead is the coordinates for the point this line crosses through (-2,-5) meaning when x = -2, y = -5.

Using this information, we can replace x and y in the equation:

-5 = 4(-2) + b

with consideration to the order of operations, it is important to solve the brackets first

-5 = -8 + b

now to get b by itself add 8 to both sides of the equation:

-5 + 8 = -8 + 8 + b

3 = b

now we remember from the slope intercept equation, b = the y intercept, so we can now solve the equation.

y = 4x + b  

replace b with the number we solved for (3).

y = 4x + 3

this is the equation of the line that is parallel to y = 4x + 1, and passes through the point (-2, -5)

hope this helps :)

3 0
1 year ago
To obtain the number of centimeters from a distance measured in meters, move the decimal point _____.two places righttwo places
castortr0y [4]
The answer is the second option: T<span>wo places left. 
 
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<span> 
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</span>
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Caseys took 25 tests in 135 days at this rate in how many days will she take another 10 test
Butoxors [25]
It will take her 54 days to take 10 more tests
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