Could someone answer all 3 questions?

Answer:

26.5 miles.

Step-by-step explanation:

Given: Time for running Boston Marathon= 2.12 h

Speed= 12.5 mph

Distance covered in Boston Marathon  

Distance covered= speed x time  

Distance covered = 12.5 x 2.12=26.5 miles  

∴ Distance covered in the Boston Marathon is 26.5 miles.

Answer:

26.5

Step-by-step explanation:

You have two numbers. Do you think you should  add, multiply, substract, or divide..?

Multiply, 2.12 x 12.5 on paper or a calculator and you will get 26.5.

Answer:

it's the 0-7

Step-by-step explanation:

because all of the numbers are negative and if you have negative and positive numbers the product will just be positive

Answer:

[tex]{ \rm{3 {x}^{2} + 2x - 4 = 0 }}[/tex]

• let's use the quadratic formular to solve the quadratic equation given.

• Considering general quadratic equation; ax² + bx + c = 0

• therefore;

[tex]{ \tt{x = \frac{ - b \pm \sqrt{ {b}^{2} - 4ac } }{2a} }} \\ [/tex]

• substitute following the mathematical operation rules:

[tex]{ \rm{x = \frac{ - 2 \pm \sqrt{ {2}^{2} - (4 \times 3 \times - 4) } }{(2 \times 3)} }} \\ \\ { \rm{x = \frac{ - 2 \pm52}{6} }} \\ [/tex]

• split the values:

[tex]{ \rm{either \: \{x = \frac{ - 2 + \sqrt{52} }{6} \} \: \: or \: \: \{x = \frac{ - 2 - \sqrt{52} }{6} \} }} \\ \\ { \rm{either \: \{x = 0.87 \} \: \: or \: \: \{x = - 1.54 \}}}[/tex]

Answer:

0.30 - 0.35 - 0.503 - 0.53

Step-by-step explanation:

Answer:

8x+3y=-6

Step-by-step explanation:

Answer:

13

Step-by-step explanation:

Use PEMDAS

1. 5-4=1

7-3=4

Now you have the equation: (2x1 + 6x4)/2

2. 2x1=2

6x4=24

Now you have the equation (2+24)/2

3. 2+24= 26

4. 26/2=13

So your answer is 13.

Make sense?

Answer:

13

Step-by-step explanation:

2(5 – 4) = 2

6(7 – 3) = 24

2 + 24 = 26

26 ÷ 2 = 13

Hope this helps!

1/3 (7)

7 is essentially 7/1, so 1 x 7     7

                                      3 x 1     3

Answer:

Could you give a picture or say what does the point K and M say.

Step-by-step explanation:

Answer:

Step-by-step explanation:

The probability can be expressed as a number between 0 and 1 or a percent value between zero and 100%.

Correct choice is:

Answer: Answer in Photo

Answer:

Slope is -2/3

Parallel slope is the same just draw another line with the same slope but a different y-intercept

Step-by-step explanation:

Answer:

θ

can be in the first quadrant

0

≤

θ

≤

90

or the fourth quadrant

270

≤

θ

≤

360

If

θ

is in the first quadrant,

then

sin

θ

=

5

13

cos

θ

=

12

13

tan

θ

=

5

12

Therefore,

sin

2

θ

=

2

sin

θ

cos

θ

=

2

×

5

13

×

12

13

=

120

169

cos

2

θ

=

cos

2

θ

−

sin

2

θ

=

(

12

13

)

2

−

(

5

13

)

2

=

144

169

−

25

169

=

119

169

If

θ

is in the fourth quadrant,

then

sin

θ

=

−

5

13

cos

θ

=

12

13

tan

θ

=

−

5

12

Therefore,

sin

2

θ

=

2

sin

θ

cos

θ

=

2

×

−

5

13

×

12

13

=

−

120

169

cos

2

θ

=

cos

2

θ

−

sin

2

θ

=

(

12

13

)

2

−

(

−

5

13

)

2

=

144

169

−

25

169

=

119

169

I see you need help with 14 - 23 evens, so hopefully this is what you need. If not, comment and I will edit it as appropriate :) Have a nice day

14: It is slightly hard to see, but I am going to say 15 mm. We can decide this because the ruler says it is in mm and on both sides are 10 and 20. It is in the middle so we will decide the answer is 15.

16: 3,629 - 429 = 3,198 (not much explanation, just use a calculator or do the subtractation)

18: 491 * 700 = 343,700 (multiply 491 * 7, then add the two zeros onto the end of the answer because it's 700, not 7)

20: 5n = 3,175 ; n = 635 (divide both sides of the equation by 5)

22: See pictured below

After that, 2/3 is equal to 0.66666666666, which we can round to 67%

Even though it is not an even, you said "14 - 23" so here is 23 as well:

230, 240, 250, 260, 270, etc

                       /\

                    256 is inbetween here

It is above 5, so the answer is C 260

Hello there!

The right prime factorization is

2*2*2*3*11 because 2 and 3 and 11 are prime.

Take a look at the words "prime" and "factorization"

Can you see something that looks like "prime factors?" Exactly!

2 is prime. 3 is prime. 11 is also prime.

A prime number is only divisible by 1 and itself.

What is the value of 5+2*15+(12*4)?

If you remember "Please Excuse My Dear Aunt Sally" that's great as long as you know what that means.

P = Parentheses

E=Exponents

M=Multiplication

D=Division

A=Addition

S=Subtraction

5+2*15+(12*4)=5+2*15+(48)=5+30+48=83

A farmer has 40 tomatoes in a basket. 18 were green. How many were red?

[tex]Given:[/tex]

18 green

40 total

[tex]Find:[/tex]

Red

40-18=22

Hope this helps

Answer:

18 green

40 total

Red

40-18=22

Step-by-step explanation:

Answer:

x = 0

y = 1

Step-by-step explanation:

2x + 3y = 3               Multiply this equation by 3

3x + 5y = 5               Multiply this equation by 2

3(2x + 3y = 3)

6x + 9y = 9

2(3x + 5y = 5  )

6x + 10y = 10             Notice the xs are the same.

6x + 9y = 9

6x + 10y =10            Subtract

     - y = - 1                Multiply each side by -1

     y = 1

2x + 3y = 3

2x + 3*1 = 3

2x = 0

x =0

Answer:

8 seconds if tyres took 1 second each tyre as 2.5/2.5 =1

The question did specify 2 1/2 secs to fll them all up which is 1 second each x 8 = 8 sec total.

Step-by-step explanation:

2  1/2 litres = number of tyres

2 1/2 seconds taken

= if each tyre took 2 1/2 seconds the quetsion should say clear but would be

2 1/2 tyres x 2 1/2 seconds = 6.26 seconds every 2 1/2 tyres

so 8 tyres x 2 1/2 seconds = 20 seconds every 8 tyres

If the 2 1/2 seconds applied to all 2 1/2

then we need to find a multiplier for 1 tyre

Here we divide

2 1/2 / 2  1/2 = 1

8 x 1 = 8 seconds.

Answer:

x = 90

Step-by-step explanation:

- [tex]\frac{8}{9}[/tex] x - [tex]\frac{4}{45}[/tex] x + [tex]\frac{1}{5}[/tex] x = - 70

Multiply through by 45 ( the LCM of 9, 45, 5 ) to clear the fractions

- 40x - 4x + 9x = - 3150 , that is

- 35x = - 3150 ( divide both sides by - 35 )

x = 90

what is 6/14 x 21/30 ?

it's 0.3

Answer:

x = -102

Step-by-step explanation:

Step 1: Multiply both sides by 10.

Step 2: Subtract 8 from both sides.

Step 3: Divide both sides by -1.

Step 4: Check if solution is correct.

Therefore, x = 11.

Have a lovely rest of your day/night.

Answer:

No, they are opposite as squared is multiplication. Please give brainliest!

[tex]35x( \frac{3}{7} = \frac{1}{5} + \frac{1}{x} ) \\ = > 35x \times \frac{3}{7} = > 35x \times \frac{1}{5} + 35x \times \frac{1}{x} \\ = > 5x \times 3 = 7x + 35 \\ = > 15x = 7x + 35 \\ = > 15x - 7x = 35 \\ = > 8x = 35 \\ = > x = \frac{35}{8} \\ = > x = 4.375[/tex]

x = 4.375

Answer:

45 lawns

Step-by-step explanation:

If you subtract 60-15 it will give you 45

Answer:

6floz bottle of orange juice.

Step-by-step explanation:

21*2=42

$42 for 6floz of juice vs $36 for the same amount. 36 is the better deal!

Answer:

6 fl oz. bottle of orange juice

Step-by-step explanation:

For the  6 fl oz bottle to be equal to the 3fl oz bottle prize, it would need to cost 42, but since it only costs 36$, it would be the better deal.

-kiniwih426