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LekaFEV [45]
3 years ago
14

4 - {22 ÷(-8-3) +11} Please show work! Thanks!

Mathematics
1 answer:
Stels [109]3 years ago
5 0
4-(22÷ -11+11)
4-(-2+11)
4-9
-5
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Tao wants to check that the expression 3(4x – 6) simplifies to 12x – 18. What is the value when 2 is substituted for x into both
timurjin [86]

Answer:

6

Step-by-step explanation:

3( 4x - 6)

Let x =2

3( 4*2 -6)

3(8-6)

3*2

6

Check

12x-18

12*2 -18

24-18

6

Both equal 6

4 0
4 years ago
A function has a y-intercept of 4 and two x-intercepts, one at 3 and one at 6.
n200080 [17]

Answer:

D) y=2/9x2+2x+4

Step-by-step explanation:

y-intercept=4

2 x intercepts= 3 and 6

so y-intercept is point where x is 0 like (0,y)

x-intercept is the opposite y is 0 (x,0)

that means y-intercept is (0,4)

x-intercept is (3,0) and (6,0)

the formula of slope intercept form is

y=mx+b

b= is y-intercept

that means

y=ox^2+mx+4

x-intercept is point where y is 0

so solve

now lets try the first option

This is are quadratic functions

you need to plug in both of these until u get one that is right

change the y until you get both x's

the first option if wrong

second one  y = 6x2 + 3x +4 has no x-intercepts

3rd option y=3/4x^2-6x-4

last option is y=

2/

9

x2+2 has points at -6. and -2.9999 or -3

7 0
3 years ago
Need help with two math questions:
Alecsey [184]
Answers: 1:B, 2:450

How-To:

Using the formula for area on the bottom of the can, (pi*r^2) you can then multiply by the amount of height missing, which is 4.

Since it was originally 10, you subtract 4 in order to get 6.

That's how to get 4.

Now, plug in pi*r^2 into a calculator (or if you must work it out, radius, r, is 10, so 10*10 is 100. 100*3.14159265 is 314.159265

Now multiply 314 by the height missing (4) to get approximately 1257.



Now for number 2.
It says it is dilated by a scale factor of 1:3 (from 1350). That means that it was made smaller, (that's what dilated means) by 3 for every 1. So take 1350 and divide it by 3 to get 450
3 0
3 years ago
Read 2 more answers
The length of a rectangle is 5 cm more than its breadth. If the perimeter of the
lisov135 [29]

Answer:

length=12cm breadth=7cm

Step-by-step explanation:

l=5+b

P=2(l+b)

38=2(5+b+b)

19=5+2b

14=2b

b=7

l=5+7=12

5 0
3 years ago
Hi, I need help with this question. Here is the question: For which data set is the median greater than the mean?
FinnZ [79.3K]

Answer:

Set 2

Step-by-step explanation:

First find the median of each set (the median being the number in the middle):

(1) { 4,7,10,13,16} = 10

(2) {8,9,10,18,19} = 10

(3) {8,9,10,11,12} = 10

(4) {1,2,10,11, 12} = 10

Then find the mean of each set (the mean being average of all the numbers, to find the average add up all the numbers and divide by the amount of numbers):

(1) { 4,7,10,13,16} = 10

(2) {8,9,10,18,19} = 12.8

(3) {8,9,10,11,12} = 10

(4) {1,2,10,11, 12} = 7.2

the answer being 12.8 since 12.8 is greater than 10

4 0
3 years ago
Read 2 more answers
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