An iron bar has volume 650 cm' and density 7.87 g/cm3.
Work out the mass of the iron. Give your answer in
a) grams
b) kilograms​

Answer:

It's -7

Step-by-step explanation:

-7 • -4=28 (multiplying 2 negatives gives you a positive)

28 - 20 =8

Answer:

16.8 in

Step-by-step explanation:

Given data

DIstance= 14 in

time= 2.5 hours

Speed= 14/2.5

Speed= 5.6 in per hour

Hence for 3 hours

Distance= speed*time

Distance= 5.6*3

Distance= 16.8 in

Answer:

it is 55%

Step-by-step explanation:

I think it is 55 %

Answer:

c=(6x+3y)-8

Step-by-step explanation:

Answer:

5? im not sure

Step-by-step explanation:

Answer:

19/4

Hope this helps!

Answer:

Is there any answer choices??

Answer:

5

Step-by-step explanation:

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

Answer:

a

Step-by-step explanation:

48=7x+13

step 1 subtract each side by 13

35=7x

step 2 divide each side by 7

x=5

Answer:

-1, -7, -13, -19

Step-by-step explanation:

-2(-3)-7 =6-7= -1

-2(0)-7 =0-7= -7

-2(3)-7 =-6-7= -13

-2(6)-7 =-12-7= -19

Answer:

(-3,-1)(0,-7)(3,-13)(6,-19)

Step-by-step explanation:

Put the x number into the x in the equation to get your answer:

y=-2(-3)-7    y=-1

y=-2(0)-7     y=-7

y=-2(3)-7      y=-13

y=-2(6)-7     y=-19

(hope this helps :P)

Answer:

To find a range of values for the third side when given two lengths, write two inequalities: one inequality that assumes the larger value given is the longest side in the triangle and one inequality that assumes that the third side is the longest side in the triangle. Combine the two inequalities for the final answer.

Step-by-step explanation:

Answer:

To find a range of values for the third side when given two lengths, write two inequalities: one inequality that assumes the larger value given is the longest side in the triangle and one inequality that assumes that the third side is the longest side in the triangle. Combine the two inequalities for the final answer.

Step-by-step explanation:

ex: a triangle has side lengths 3, and 7, find the possible range length for the third side.

Solution: let x be the length of the third side of the triangle

The maximum value:

x<3+7=10                            ______ x<10

The mimimum value:

x>7-3=4                          ________ x>4

so 4<x<10  ( x is between 4 and 10)

Hope that made sense and helped!

Answer:

Step-by-step explanation:

4). Surface area of front and back = 2(lengh × height)

                                                        = 2(7×3)

                                                        = 63 cm²

    Surface area of top and bottom = 2(length × width)

                                                          = 2(8×7)

                                                          = 112 cm²

     Surface area of left and right = 2(width × height)

                                                      = 2(8×3)

                                                      = 48 cm²

      Total surface area = 63 + 112 + 48

                                      = 223 cm²

5). Surface area of top and bottom = 2πr²

                                                          = 2π(4)²

                                                          = 32π

                                                          = 100.53 cm²

    Surface area of middle = h(π × d)

                                            = 4(π × 8)

                                            = 32π

                                            = 100.53 cm²

     Total surface area = 32π + 32π

                                     = 64π

                                     = 201.06 cm²

6). Surface area of front and back = [tex]2[\frac{1}{2}(\text{Base})(\text{Height)}][/tex]

                                                        = Base × Height

                                                        = 6 × 8

                                                        = 48 cm²

     Surface area of bottom = 6 × 11

                                             = 66 cm²

     Surface area of the left = 8 × 11

                                             = 88 cm²

     Surface area of right = 10 × 11

                                        = 110 cm²

      Total surface area = 48 + 66 + 88 + 110

                                      = 312 cm²  

Answer:

the second and last one

Step-by-step explanation:

only ones that equal to the same amount at the question all others = -6 which is incorrect.

Answer:

The simplest form of 50:30 is 53.

Step-by-step explanation:

[tex]\huge\text{Hey there!}[/tex]

[tex]\large\text{Simplify the ratio 50:30}[/tex]

[tex]\\\textsf{Finding your GCF}\downarrow\\\\\textsf{30: 1, 2, 3, 5, 10, 15, 30}\\\textsf{50: 1, 2, 5, 10, 25, 30}\\\\\bold{GCF: \underline{10}}\large\checkmark[/tex]

[tex]\large\text{DIVIDE BOTH of the TERMS by 10}[/tex]

[tex]\mathsf{50\div10=5}\\\mathsf{30\div10=3}}[/tex]

[tex]\large\text{We had to reduce the ratio of 50:30 to your LOWEST TERMS}\\\large\text{by DIVIDING each of the TERMS by 10}[/tex]

[tex]\bold{Thus, that\ means\ that\ 50:30\ is\ simplified\ to \rightarrow 5:3}[/tex]

[tex]\boxed{\boxed{\huge\text{Answer: \bold{5:3}}}}\huge\checkmark[/tex]

[tex]\large\text{Good luck on your assignment and enjoy your day!}[/tex]

~[tex]\frak{Amphitrite1040:)}[/tex]

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Answer:

7

Step-by-step explanation:

Set up an equation where x is the number

2x = 14

Divide by 2 on each side

x = 7

So, the number is 7.

Step-by-step explanation

two times what equals four teen

Answer:

14 divide 2 = the answer is 7

Hope is work fix me if im worng ]

Answer:

278.5 mm2

Step-by-step explanation:

Answer:

Angle B is 120°

Step-by-step explanation:

Since it's a supplementary angle (angles that add up to 180°) on top of the triangle, you would find ∠B by subtracting 180 by 60 and ∠B will be 120°. Hope this helps:)

Answer: 5.25

Step-by-step explanation:

add them

Answer:

6

4.5 is 75 percent of 6

Answer:

Step-by-step explanation:

7=c/3-1

add 1 to both sides

8=c/3

to get rid of the 3, multiply both sides 3

24=c

Answer:

x=15

Step-by-step explanation:

Answer:

16x+8

Step-by-step explanation:

:)

Answer:

10x - 8

Step-by-step explanation:

(4x - 7)2 + (x + 3)2

Use distributive property

8x - 14 + 2x + 6

Simplify

8x - 14 + 2x + 6

Combine like terms

10x - 8

Simplify

I hope this helps! May I please have brainliest? :)

Answer:

A fraction simply tells us how many parts of a whole we have. You can recognize a fraction by the slash that is written between the two numbers. We have a top number, the numerator, and a bottom number, the denominator. For example, 1/2 is a fraction.

Step-by-step explanation:

Answer:

a quantity that is not a whole number

Answer:

Step-by-step explanation:

WeMoveU charges an hourly rate for a moving team to load and unload a truck. The charges is a different hourly rate for a team pack and unpack boxes. Use the quotes below to determine the company's hourly rates. Weekday Move: 5hours of loading and unloading services. 4 hours of packing and unpacking service. $730 total cost. Weekend Move: 4 hours of loading and unloading services. 5 hours of packing and unpacking services. $710 total cost.

Let us represent:

Hours of Loading and Unloading = X

Hours of packing = y

5hours of loading and unloading services. 4 hours of packing and unpacking service. $730 total cost.

5x + 4y = 730..... Equation 1

Weekend Move: 4 hours of loading and unloading services. 5 hours of packing and unpacking services. $710 total cost.

4x + 5y = 710.... Equation 2

Combining both Equations together

5x + 4y = 730..... Equation 1

4x + 5y = 710.... Equation 2

We solve using Elimination method

Answer:

451

Step-by-step explanation:

on a calculator go to y= and type the equation in and then go to the table.  

Answer:

x = 12, y = 20

Step-by-step explanation:

Given

4a - 2b

= 4[tex]\left[\begin{array}{ccc}4\\7\\\end{array}\right][/tex] - 2[tex]\left[\begin{array}{ccc}2\\4\\\end{array}\right][/tex] ← multiply each component by the scalar

= [tex]\left[\begin{array}{ccc}4(4)\\4(7)\\\end{array}\right][/tex] - [tex]\left[\begin{array}{ccc}2(2)\\2(4)\\\end{array}\right][/tex]

= [tex]\left[\begin{array}{ccc}16\\28\\\end{array}\right][/tex] - [tex]\left[\begin{array}{ccc}4\\8\\\end{array}\right][/tex] ← subtract corresponding components

= [tex]\left[\begin{array}{ccc}16-4\\28-8\\\end{array}\right][/tex]

= [tex]\left[\begin{array}{ccc}12\\20\\\end{array}\right][/tex] = [tex]\left[\begin{array}{ccc}x\\y\\\end{array}\right][/tex]

with x = 12 and y = 20

Answer:

25

Step-by-step explanation:

5(3)+10

15+10

25

5a + 10

5(3) + 10

15 + 10 = 25

(5a + 10) = 25 when a = 3