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ale4655 [162]
3 years ago
10

^lets start off easy☺️^

Mathematics
1 answer:
butalik [34]3 years ago
7 0

Answer:

mary=10 jack=15

Step-by-step explanation:

After 4 years Mary (x+4), Jack's age (x+5) + 4.

sum of the ages after 4 years :(x+4) + (x+5) +4=33 

Simplifying the equation:

2x+13 = 33 ----->> 2x=20----->>>>x = 10 Mary's age

10 + 5 = 15 which is Jack's age. 

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Which inequality is true when x=7?​
a_sh-v [17]

Answer:

D

11 - x <_ 18

11 - 7 <_ 18

4 <_ 18 (4 is less than or equal to 18)

7 0
3 years ago
Andrew has a round trampoline with a diameter of 4 yards. What is the circumference of the trampoline?
OLga [1]

You would use this formula for the problem...

(C=2πr) The circumference equals 2 multiplied by pi and radius.

In this problem it says diameter, but the diameter is just twice the length of the radius, so just multiply the radius by 2. Plugin your number.

C=2π(2) since 2 is half of 4, that's your radius.

Your answer is roughly C= 12.57.

You're welcome.

8 0
3 years ago
Someone help my sister with her math I’ll give you brainlest.
Scilla [17]

9514 1404 393

Answer:

  see attached

Step-by-step explanation:

We're not quite sure what the question is.

It appears you may be interested in the names of the groups of 3 digits. Each such group is called a "period." Each period is named for the place value of its right-most digit.

The period just to the left of the decimal point is the "ones" period. To the left of that is the "thousands" period, and to its left is the "millions" period.

When writing the name of a number, the name of the three digits within a period is given, followed by the period name (if it is greater than "ones"). This continues left to right, until you get to the decimal point. For example, the number shown is ...

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5 0
2 years ago
If a number is increased by 28 and then divided by 5​, the result is 7.
12345 [234]

x+28 / 5 = 7

Multiply both sides by 5:

x +28 = 35

Subtract 28 from both sides:

x = 7

3 0
3 years ago
Use the distributive property to express 28+42
vovikov84 [41]
To express the sum of two numbers using distributive property, we factor out the highest common factor (HCF) of the two numbers (i.e. the greatest number that can divide the two numbers without remainder)

28 = 2 x 2 x 7
42 = 2 x 3 x 7

The HCF of 28 and 42 is given by 2 x 7 = 14

Therefore, we express 28 + 42 using distributive property thus: 14(2 + 3)
5 0
3 years ago
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