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3 years ago

I really need some help............!!!!!!!!!

Mathematics

2 answers:

Marat540 [252]3 years ago

7 0

Answer:

1.25

Step-by-step explanation:

Dmitrij [34]3 years ago

3 0

Answer:

1.25 cm

Step-by-step explanation:

The blow up snow flake is 15 cm

The blow up ratio is 12 to 1

Divide the 15 cm by 12 to determine the size in real life

15/12 =1.25 cm

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Consider the following system of equations:

Delicious77 [7]

Answer:

The system has infinitely solutions

Step-by-step explanation:

we have

$-\frac{1}{3}x^{2}=-\frac{5}{6}+\frac{1}{3}y^{2}$

$\frac{1}{3}x^{2}+\frac{1}{3}y^{2}=\frac{5}{6}$

Multiply by 3 both sides

$x^{2}+y^{2}=\frac{5}{2}$ ----> equation A

The equation A is a circle centered at origin with radius $r=\sqrt{5/2}\ units$

and

$5y^{2} =\frac{25}{2}-5x^{2}$

$5x^{2}+5y^{2} =\frac{25}{2}$

Divide by 5 both sides

$x^{2}+y^{2} =\frac{5}{2}$ ----> equation B

The equation B is a circle centered at origin with radius $r=\sqrt{5/2}\ units$

Equation A and Equation B are the same

Therefore

The system has infinitely solutions

7 0

2 years ago

Read 2 more answers

Given that the expression x³_ ax² + bx+c leaves the same remainder when divided by x + 1 or x-2, find 'a' in terms of 'b'.

goblinko [34]

Answer:

Hi,

a=b+3

Step-by-step explanation:

$\begin{array}{c||c|c|c|c}&x^3&x^2&x&1\\---&---&---&---&---\\&1&-a&b&c\\x=-1&&-1&a+1&-a-b-1\\---&---&---&---&---\\&1&-a-1&a+b+1&c-a-b-1\\\end{array}$

$\begin{array}{c||c|c|c|c}&x^3&x^2&x&1\\---&---&---&---&---\\&1&-a&b&c\\x=2&&2&4-2a&2b+8-4a\\---&---&---&---&---\\&1&2-a&b+4-2a&c+2b+8-4a\\\end{array}$

Thus:

c+2b+8-4a=c-a-b-1

3b-3a=-9

5 0

2 years ago

Find the inverse of (1/3y)-7 Please show work!

Pani-rosa [81]

Answer:

Step-by-step explanation:

if additive inverse then

(1/3y)+7

if multiplicative inverse then

3y-7

if both then

3y+7

if in this way

f(x)=(1/3x)-7

f(-x)=(-1/3)-7

7 0

2 years ago

Giving brainliest!!!!!!!!!!!

koban [17]

Answer:

i believe its D

Step-by-step explanation:

i hope that's right if its not I'm sorry

6 0

2 years ago

Read 2 more answers

(d) Work out<br> 1<br> 4 of 28 kg.

Mariana [72]

Step-by-step explanation:

$here \: is \: your \: soution \\ \\ (1 \div 4) \times 28 \\ \\ 28 \div 4 = 7 \\ \\ 7 \: is \: your \: answer \\ \\ hope \: it \: help$

5 0

2 years ago