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2 years ago

I’m confused on this one

Mathematics

1 answer:

djyliett [7]2 years ago

4 0

BD is 62 cm because first we have to plug 8 as x and we get BE as 31 and since BE is half of BD then BD would be 31*2 which is 62.

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2x – Зу = -1 + 3x+3y= 26 ОА. бу = 25 ОВ. 5х = 27 Ос. 5х = 25 OD. 5x - бу = -27

Brilliant_brown [7]

Answer:

C. $5x=25$

Step-by-step explanation:

Given:

$2x-3y=-1\\3x-3y=26$

Add the two equations, we get

$2x-3y+3x+3y=-1+26\\(2x+3x)+(-3y+3y)=25\\5x+0=25\\5x=25$

Therefore, the correct option is option C.

5 0

2 years ago

A "child has six blocks, three of which are red and three of which are green". How many patterns can shemake by placing them all

makvit [3.9K]

Answer: There are 20 ways and 1680 ways respectively.

Step-by-step explanation:

Since we have given that

Total number of blocks = 6

Number of red blocks = 3

Number of green blocks = 3

So, Number of patterns she can make by placing them all in a line is given by

$\dfrac{6!}{3!\times 3!}\\\\=20$

If there are 3 white blocks

so, total number of white blocks becomes 9

So, Number of total pattern she can make by placing all nine blocks in a line is given by

$\dfrac{9!}{3!\times 3!\times 3!}\\\\=1680\ ways$

Hence, there are 20 ways and 1680 ways respectively.

6 0

3 years ago

Can someone help me solve this?

Alex_Xolod [135]

The answer is C. Hope this helps

7 0

2 years ago

Read 2 more answers

Do the ratios 10:9 and 17:15 form a proportion?

KIM [24]

Answer:

Nope! these ratios do not form a proportion

Step-by-step explanation:

if you use a calculator to divide 10/9, you get 1.111 repeating.

if you use a calculator to divide 17/15, you get 1.133 repeating.

since 1.111 does not equal 1.113, these ratios are not proportional. 

8 0

3 years ago

The perimeter it a square field is 224. How long is

geniusboy [140]

Since each side of a sqare is equal and there are four sides to the square
$224 = 4x$
X being the side length.
Then you would simiply divide by 4 to isolate x
$x = 56$
A side length is 56

8 0

3 years ago