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soldier1979 [14.2K]

3 years ago

12

A runner has run 2.281 kilometers of a 10 kilometer race. How much farther does he need to run to finish the race? Show your wor

k.

2 answers:

9966 [12]3 years ago

5 0

Answer:

7.719km

Step-by-step explanation:

10 - 2.281 is 7.719

Kamila [148]3 years ago

4 0

10km because 10km-2.281km=7.719km

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Last time, one out of every 4 students in our class was absent. This time, after Jen came back, only one out of every 5 students

VMariaS [17]

Answer: There are 20 students and 4 students are not here today.

Step-by-step explanation:

If the number of students = 4

Let the number of students be 'x'.

Fraction of students absent = $\dfrac{x}{4}$

If the number of students = 5

Fraction of students absent = $\dfrac{x}{5}$

And Jen came back,

So, the fraction of student absent is also written as

$\dfrac{x}{4}-1$

According to question, it becomes,

$\dfrac{x}{5}=\dfrac{x}{4}-1\\\\\dfrac{x}{5}=\dfrac{x-4}{4}\\\\4x=5(x-4)\\\\4x=5x-20\\\\4x-5x=-20\\\\-x=-20\\\\x=20$

Hence, there are 20 students in our school.

And number of students are not here today is $\dfrac{20}{5}=4$

3 0

3 years ago

At a sport banquett 8 guests are seated at each of the 15 tables how many guests (x) are seated at the table write an equation t

7nadin3 [17]

Answer:your answer is x/8=15

Step-by-step explanation:

I got it wrong and it showed this one is right

8 0

3 years ago

14. Solve: 3x² + 5x – 12 = 0<br>B. 4-3<br>C. 8, - 18

VARVARA [1.3K]

Answer:

b

Step-by-step explanation:

The equation:

3

x

2

−

5

x

−

12

=

0

is in the form:

a

x

2

+

b

x

+

c

=

0

with

a

=

3

,

b

=

−

5

,

c

=

−

12

The roots are given by the quadratic formula:

x

=

−

b

±

√

b

2

−

4

a

c

2

a

x

=

5

±

√

(

−

5

)

2

−

4

(

3

)

(

−

12

)

2

(

3

)

x

=

5

±

√

25

+

144

6

x

=

5

±

√

169

6

x

=

5

±

13

6

That is:

x

=

5

+

13

6

=

18

6

=

3

or

x

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5

−

13

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4

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7 0

3 years ago

Can someone help me out :P

GuDViN [60]

Answer:

ummmm im sorry but i need points uwu love you<3

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Can someone help I will give the brainliest Plz help u will get 50 points

lara [203]

Answer:

B.) 6

2.) 70

3.) 56

Step-by-step explanation:

B.) 2(6) - 6

= 12 - 6

=6

2.) 7(2(3)+4)

=7(6+4)

=42+28

=70

3.) 10(3) + 4(3) + 14

= 30 + 12 + 14

= 42+14

=56

Have a wonderful day

:)

7 0

3 years ago