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Marina CMI [18]
3 years ago
14

Hi, I really need help with my homework please help

Mathematics
2 answers:
frez [133]3 years ago
7 0
1. you would divide the distance (204m) by the time it took (3h).

204 ÷ 3 = 68mph

each hour she would drive 68 miles (3 hours to reach 204 miles).




2. essentially the same thing. it takes $16.80 for 4 gallons (which you divide).

$16.80 ÷ 4 = $4.2

4.2 fits into 16.80 4 times.




3. this is a bit more trickier. there is 60 minutes in an hour. 20 can fit into 60, 3 times. then you times 5 by 3.

60 ÷ 20 = 3.
5 × 3 = 15




4.
a. 5 lemons cost $1.80. to find out a single lemon you divide $1.80 by 5 to see how much 1 is.

1.80 ÷ 5 = $0.36

b. you take the single amount to see how many lemons are 9.

$0.36 × 9 = $3.24

multiplying is literally just 0.36 + 0.36 + 0.36 + 0.36 + 0.36 + 0.36 + 0.36 + 0.36 + 0.36
8090 [49]3 years ago
5 0
Number one is 68 you have to divide on this download photomath its better because all you have to do is take a picture and it shows you how to do it ;)
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Jackson bought 3 pounds of candies for $9.75. c What was the price of these candies in cents per ounce?
Vladimir79 [104]
Jackson bought 3*16 = 48 ounces for 975 cents. The unit price in cents per ounce is ...
   975 cents/(48 oz) = 20.3125 cents/oz
7 0
3 years ago
Read 2 more answers
1) What can u do to get 2x alone on the left side?
CaHeK987 [17]

Answer:

1)

82.5 - <u>8</u><u>2</u><u>.</u><u>5</u> + 2x = 338.5 - <u>8</u><u>2</u><u>.</u><u>5</u>

<u>2</u>x = <u>2</u><u>5</u><u>6</u>

2)

2x ÷ <u>2</u> = 256 ÷ <u>2</u>

x = <u>1</u><u>2</u><u>8</u>

Step-by-step explanation:

1)

In order to get rid 82.5, you have to substract the same value on both side to get a 0 value.

2)

In order to find the value of x, you have to divide the value that is sticked with x which is 2. As you divide 2 by 2, you will get 1 as a single value of x so you have to divide 2 to both side too.

5 0
3 years ago
13
zepelin [54]

Answer:

The required equation is: \mathbf{f(x)=\frac{3}{4}x-\frac{29}{4}}

Step-by-step explanation:

We need to find equation from the table given

x     f(x)

3     -5

7     -2

11     1

15    4

We can write equation in the form of y=mx+b

where m is slope and b is y-intercept.

Finding Slope

We can used the slope formula to find slope: Slope=\frac{y_2-y_1}{x_2-x_1}

From the table we have: x_1=3, y_1=-5, x_2=7, y_2=-2

Putting values and finding slope

Slope=\frac{y_2-y_1}{x_2-x_1}\\Slope=\frac{-2-(-5)}{7-3} \\Slope=\frac{-2+5}{7-3}\\Slope=\frac{3}{4}

So, we get slope m=\frac{3}{4}

Now, finding y-intercept

Using the slope m=\frac{3}{4} and point (3,-5) we can find y-intercept

y=mx+b\\-5=\frac{3}{4}(3)+b\\-5=\frac{9}{4}+b\\b=-5-\frac{9}{4}\\b=\frac{-5*4-9}{4}\\b=\frac{-20-9}{4}\\b=\frac{-29}{4}

The y-intercept is b=\frac{-29}{4}

So, the equation having slope m=\frac{3}{4} and y-intercept b=\frac{-29}{4} will be:

y=mx+b\\y=\frac{3}{4}x-\frac{29}{4}

The required equation is: \mathbf{f(x)=\frac{3}{4}x-\frac{29}{4}}

6 0
3 years ago
What is the missing number ? <br> 1,8,27,64,125,216,?
Katena32 [7]

Answer:

64

Step-by-step explanation:

this is the sequence of cube. ... hence the sequence will be 1-8-27-64-125-216.

(wen 64 is already tere)

3 0
2 years ago
HOW MANY SIDES ARE ON THIS TRIANGLE NEED HELP ASAP AND I NEED SOMEONE WHI ACTUALLY KNOWS NOT SOME SECOND GRADER
sladkih [1.3K]
There would be four sides, three around and the bottom base <span />
8 0
3 years ago
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