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3 years ago

Please help I just need #5-8

Mathematics

2 answers:

olga_2 [115]3 years ago

7 0

13 and i cant see number 8

lora16 [44]3 years ago

3 0

I don't want to do this for you, I do, but I want you to learn, so, use PEMDAS(Parenthesis, Exponents,MUltiply,Divide,Add,Subtract.) Fine. problem 6=d 8=a Well 7 is little tricky. The answer is 10, but there is no a,b,c,or d that says it's the value. Example (F=10) there is nothing like that. Did you cut it off?

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PLS HELP QUICK!

nikklg [1K]

Answer:

3 x 21

20 x 4 tenths

21 x thirteenth

please mark me as brainlist please

3 0

2 years ago

RS = 4x – 9, ST = 19, RT = 80 – 14 Equation: 82 – 14 RS RT

algol13

Step-by-step explanation:

The expressions are not properly written

Given

RS = 4x – 9

ST = 19

RT = 8x – 14

Based on the given parameters, the addition postulate below is true

RS+ST = RT

Substitute

4x-9+19 = 8x-14

collect like terms

4x-8x = -14-19+9

-4x = -33+9

-4x = -24

x = -24/-4

x = 6

Get RS:

RS = 4x-9

RS = 4(6)- 9

RS = 24-9

RS = 15

Get RT:

RT = 8x - 14

RT = 8(6)-14

RT = 48-14

RT = 34

4 0

3 years ago

The velocity v of an object rolled down an inclined plane is given by the formula v=39d where d is the distance the object has r

Nadya [2.5K]

V = 39d

Make d the subject

d = v/39

4 0

3 years ago

What line that passes through the points (-2, 1) and (2, 1).?

bogdanovich [222]

The equation of the line passing through those two points is y=0x+1

7 0

3 years ago

Show work and Factor 4x^2+xy-18y^2

grigory [225]

Answer:

$4x^2+xy-18y^2=(4x+9y)\,(x-2y)$

Step-by-step explanation:

Let's examine the following general product of two binomials with variables x and y in different terms:

$(ax+by)\,(cx+dy)= ac\,x^2+adxy+bcxy+bdy^2$

so we want the following to happen:

$a\,c = 4\\ad+bc=1\\bd--18$

Notice as well that $ad+bc =1$ means that those two products must differ in just one unit so, one of them has to be negative, or three of them negative. Given that the product $bd=-18$ , then we can consider the case in which one of this (b or d) is the negative factor. So let's then assume that $a\,\,and \,\,c$ are positive.