WHAT IS THE HCF OF 21 28 42

Answers

Answer 1

Answer:

7.

Step-by-step explanation:

21 = 3 * 7

28 = 2 * 2 * 7

42 = 2 * 3 * 7

Collecting common factors:

t is common to all 3 sets of factors so

HCF = 7.


Related Questions

I need help plzzzzzzzzzzz

Answers

Answer:

D. infinite

Step-by-step explanation:

The answer is infinite

Help meee please I need help

Answers

Answer:

A

Step-by-step explanation:

[tex]d^2+16^2=25^2\\d^2+256=625\\d^2=368\\d=19.2[/tex]

Answer:

The answer is D. 47 meters.

Completing the
Rewrite the equation by completing the square.
x^2-14x+33=0

Answers

Answer:

11,3

Step-by-step explanation:

Answer:

It is -7 and 16

Step-by-step explanation:

Khan

Find the diameter of the wheel. 0.6ft

Answers

Answer:

Diameter of the wheel = 1.2 feet

Step-by-step explanation:

Radius of a wheel = Distance between a point on the circumference and the center of the circle

Diameter of a wheel = 2(radius of the circle)

                                  = 2(0.6)

                                  = 1.2 feet

Therefore, diameter of the wheel is 1.2 feet.

If P = (-1,-1), find the image
of P under the following rotation.
270° counterclockwise about the origin
([?], [])
Enter the number that belongs in
the green box.
Enter

Answers

Answer:     (-1, 1)

=========================================================

Explanation:

The rotation rule we use is [tex](x,y) \to (y, -x)[/tex]

The x and y coordinates step places, then the second coordinate (after the swap) changes in sign from positive to negative, or vice versa.

For example, the point (5,7) rotates to (7, -5). As another example, (2,-1) becomes (-1, -2). As another example, (-9,4) becomes (4,9).

----------------------------------

In our case, the point (-1,-1) will rotate to (-1, 1)

Note: A 270 degree counterclockwise rotation about the origin is the same as a 90 degree clockwise rotation about the origin. Refer to the diagram below.

Milan brought 18 packs of cola to a party, and each pack had 8 cans. Donna brought 9 cans of juice. How many cans did they bring in all?
cans

Answers

Answer:

I think its 72 cans

Tell me if I'm wrong!

pleaseee help me :(



.

Answers

Answer:

36

explanation

base times height time 1/2

Have a great day

Anyone thats smart ash amosc rvcklessray and Ill $$$ you please

Answers

I'm not sure if this is fully in English or not ><

sorry I cant help:3

Mhanifa please help asap! I need this done and i dont get it

Answers

To answer you use the Pythagorean theorem, a^2+b^2=c^2

10. C= 5
11. B= 2 V55 (2 square root of 55)
12. C= 2 V5
13. A= V5.39

Explanation:

10. a^2+b^2=c^2
3^2+4^2=c^2
9+16=c^2 (add 9 and 16)
25=c^2
V25= Vc^2 (take the square root of both sides to get):
5=c

11. 6^2+b^2=16^2
36+b^2=256 (256-36)
b^2=220 (square root, 220 cannot be simplified so you factor it and get):
b= 2 V55

12. 4^2+2^2=c^2
16+4=c^2
20=c^2 ( square root it then factor)
2 V5 = c

13. a^2+3.5^2=4.2^2
a^2+12.25=17.64 (subtract 17.64 and 12.25)
a^2=5.39 ( square root/ cannot be simplified so the square root of 5.39 is your answer)


I hope this helped you understand! I hope you have a good day!

Answer:

Use Pythagorean to find the missing side lengths.It assumed a and b are legs and c is the hypotenuse.All numbers are rounded to the nearest tenth.

#10

[tex]c = \sqrt{3^2+4^2} = \sqrt{25} = 5[/tex]

#11

[tex]b = \sqrt{16^2-6^2} = \sqrt{220} = 14.8[/tex]

#12

[tex]c = \sqrt{4^2+2^2} = \sqrt{20} = 4.5[/tex]

#13

[tex]a = \sqrt{4.2^2-3.5^2} = \sqrt{5.39} = 2.3[/tex]

Pls solve this ill give you brainiest

Answers

Answer:

-2

Step-by-step explanation:

by testing

Tell me if its a function or not plz help its due today am giving brainliest ppppppppppllllllzzzzzz

Answers

Answer:

#5 is a function, #6 is not a function

Step-by-step explanation:

please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!

Answers

Answer:

angle measures to the.

Step-by-step explanation:

I don't know if it is a choice but if you not do measure and multiply If my answer is wrong. Hope not.

Sara makes some Blue paint. She mixes yellow, red and brown in the ratio 4: 6: 9. He uses 340 ml of the yellow paint. How much Blue paint does he make?

Answers

Answer:

1615

Step-by-step explanation:

the equation that represents the amount of yellow paint used =

(ratio of yellow paint / sum of ratios) x p = 340

p = blue paint

4 / 19 x p = 340

p = 1615

There are 30 people entered into a contest. How many ways can the contestants win first, second, third, and fourth place?​

Answers

Answer:

I am not entirely sure so don't kill me if it's wrong qwq

Step-by-step explanation:

Well assuming P represents the number of outcomes, n the number of competitors and r the number of places to be awarded.

P = n!

    (n−r)!

P=30! /

     (30-4)!

P=30!/26!

P=657720

   

   

hey! please help i’ll give brainliest!

Answers

Answer:

D it will remain at rest

Step-by-step explanation:

Balanced force is two forces pushing the same amount on different sides of an object. If you and a friend tried pushing a table from either side with the same amount of force, it wouldn’t move.

covery
Tissues
The volume of
the figure is
cubic inches.
Tissues
2 in.
Tissues
3 in.
6 in.
PLEASE

Answers

Answer:

[tex]V=108~in^3[/tex]

»»---------¤-----------««

[tex]l=6in\\\\w=3in\\\\h=2*3=6in[/tex]

∴[tex]Volume=l*w*h[/tex]

[tex]6*3*6=[/tex][tex]108 ~in^3[/tex] ✔︎

•·················•·················•

hope it helps....

have a great day!!

SOMEONE HELP ASAP WITH THIS QUESTION HELPPPPPPP

TYSM!!!!

Answers

Answer:

a = 3cm , h = 6cm

[tex]A = a^2 + 2a\sqrt{\frac{a^2}{4} h^2} =[/tex] [tex]46.11cm^2[/tex]

help math plz due date is close

Answers

Answer:

it should be 251, if i did it correct lol

Step-by-step explanation:

Write the equation of the circle with center (0, 0) and (3, 6) a point on the circle.

Answers

Answer:

Step-by-step explanation:

We will use the standard form of a circle to solve for the radius and then fill it back in. h is 0, k is 0, x is 3, and y is 6:

[tex](3-0)^2+(6-0)^2=r^2[/tex] and

[tex]3^2+6^2=r^2[/tex] and

[tex]9+36=r^2[/tex]

Therefore, r-squared is 45, so the circle's equation in standard form is

[tex](x-0)^2+(y-0)^2=45[/tex] or more simply:

[tex]x^2+y^2=45[/tex]

Help im struggling and its due tommorow need help fast figure out these 2 questions Show work Please NO LInks Dont answer if your not gonna do it please.

Answers

Answer:

28. x = 3 31. x = -3

Step-by-step explanation:

4x=12

divide both sides by 4

4x/4 = 12/ 4

x = 3

x/-3 = 1

multiply both sides by -3

x/-3 (-3) = 1 (-3)

simplify both sides

x = -3

Writing a linear equations

Answers

Answer:

y = -4x + 5

Step-by-step explanation:

Equation of the line can be written as y = mx + b (slope-intercept form)

Where m = slope and b = y-intercept of the line.

Let's find m and b of the line

Slope (m) using the points (1, 1) and (0, 5),

Slope (m) = change in y/change in x

m = (5 - 1)/(0 - 1) = 4/-1

m = -4

Find b:

b = the point where the line cuts the y-axis = 5 (y-intercept)

To write the equation substitute m = -4 and b = 5 into y = mx + b

y = -4x + 5

what is the missing exponent?

17 / 17^4 = 17^8​

Answers

Answer:

The missing exponent is 12.

Step-by-step explanation:

Whenever you divide same-base exponents, you keep the base numbers the same and subtract the exponents.

The only number subtracted by 4 that would give you 8 is 12.

Or, if the numbers are larger, it is must easier to add the exponent in the answer to the number in the equation.

For example,

[tex]17^4+17^8=17^1^2[/tex]

Therefore, the missing exponent is 12.

Because:  [tex]17^1^2/17^4=17^8[/tex]

HELP ILL GIVE BRAINLIEST

Answers

Answer:

Option 'a' is the correct answer.

The school chess team must raise mora than $300 to attend a regional chess competition. Complete the inequality below to represent this condition.

Answers

Answer:

a > $300

Step-by-step explanation:

Note that

> means greater than

< means less than

≥ means greater than or equal to  

≤ less than or equal to  

for example : 2 < 3 means 2 is less than 3

3 >2 means 3 is greater than 2

the school must raise greater than $300 so the sign to be used is >

let the amount = a

a > $300

In the 2004 Summer Olympics, Adam van Koeverden of Oakville, Ontario, won two medals. He won the gold medal in the men’s 500 m kayak race, with a time of 1 min 37.9 s. He also won the bronze medal in the 1000 m race, with a time of 3 min 28.2 s. In which race did he row with greater speed?

Answers

Answer: 500 meters

Step-by-step explanation:

Since he won the gold medal in the men’s 500 m kayak race, with a time of 1 min 37.9 s, the speed will be:

= Distance/Time

= 500m/1 min 37.9s

= 500m/97.9s

= 5.11m/s

Since he also won the bronze medal in the 1000 m race, with a time of 3 min 28.2s, the speed will be:

= Distance/Time

= 1000/3 min 28.2s

= 1000m/208.2s

= 4.80m/s

Therefore, he rowed with greater speed in the 500 meters.

Note that 60seconds = 1 minute

What is the measure of the radius of the cone in the diagram below?
X
6 cm
8 cm
3 cm
4 cm
ОООО
6 cm
8 cm

Answers

Answer:

Option (2)

Step-by-step explanation:

Radius of the circular base of the cone = [tex]\frac{1}{2}(\text{Diameter of the circular base})[/tex]

Given in the picture,

Diameter of the circular base = 8 cm

Height of the cone = 6 cm

Therefore, radius of the cone = [tex]\frac{8}{2}[/tex]

                                                 = 4 cm

Option (2) will be the correct option.

Someone please help me I’ll give out brainliest please dont answer if you don’t know

Answers

Answer:

5x=0

X=0 only one solution

Answer:

5x=0

x= 0 anly solution. helpful answer

The side lengths of a triangle are 5, 12, and 13, is this a right triangle?

Answers

Answer:

D.

Step-by-step explanation:

Answer:

The answer is D

Step-by-step explanation:

Choose D.......

Please help me with this one

Answers

Answer:

19.1 cm

Step-by-step explanation:

the other side = √8.1²-7.1²=√65.61- 50.41

= √15.20 = 3.9

perimeter = 7.1+8.1+3.9= 19.1 cm

Select the two values of x that are roots of this equation.
2x2 + 7 x + 6 = 0
O A. X=-3
B. X= -4
C. x= -2
D. x= - 3/2

just for those that cant find it!
answer is in the picture, hope that helps

Answers

Answer:

[tex]\implies x = (-2) \qquad or\qquad x = \dfrac{-3}{2}[/tex]

Step-by-step explanation:

Given :-

A quadratic equation is given to us.The equation is 2x² + 7x +6=0

And we need to find out the roots of the given equation. We can use the middle term splitting method to find out the roots as ,

Given equation :-

[tex]\implies 2x^2 + 7x +6=0[/tex]

Step 1: Find out the factors of 12 :-

We will choose the two factors such that their sum equals to the coefficient of x i.e. 7 .The factors are , 1×12 , 2×6 , 3×4 .

And 3 + 4 = 7. So we will break the middle term into 3x and 4x .

Step 2 : Breaking the middle term :-

[tex]\implies 2x^2 + 3x+4x +6=0[/tex]

Step 3: Take out common from terms :-

[tex]\implies x(2x + 3) +2(2x +3)=0[/tex]

[tex]\implies ( x +2)(2x+3)=0 [/tex]

Step 4 : Equate them with 0 :-

[tex]\implies x = (-2) \qquad or\qquad x = \dfrac{-3}{2}[/tex]

Hence the correct options are C and D .

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