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3 years ago

-6x + y = -2 8x + 3y = -6 solve each system by substitution.

Mathematics

1 answer:

Nina [5.8K]3 years ago

6 0

Answer:

x=0,y = -2

Step-by-step explanation:

hope i helped

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9 Modelling The inside of a saucepan has diameter 20 cm and height 13 cm.

Mrrafil [7]

Answer:

The inside of a saucepan has a cylindrical shape so the capacity of a saucepan is: $V=\pi .(\frac{20}{2})^{2}.13=4084(cm^{3})=4.084(l)$

Step-by-step explanation:

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3 years ago

What are the a b and c values of 3x^2-4x=20

joja [24]

Answer:

$a = 3, b = -4, c = -20$

Step-by-step explanation:

<u>Step 1: Find the a, b, and c values</u>

$ax^2 + bx + c = 0$

$3x^2 - 4x - 20 = 0$

The a value is: 3

The b value is: -4

The c value is: -20

Answer: $a = 3, b = -4, c = -20$

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3 years ago

I need to know how to write and solve the equation

777dan777 [17]

first divide 14 by 3.5 you will get (2.25+x= 4) then subtract 2.25 from 4 as (x=4-2.25) and the answer will be 1.75

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3 years ago

Assume that the significance level is alpha equals 0.01. Use the given information to find the P-value and the critical value(

Aleksandr-060686 [28]

Answer: 0.1010052

Step-by-step explanation:

Given : Significance level : $\alpha=0.01$

Alternative hypothesis : $H_1:\ p\neq\dfrac{3}{4}$

The test statistic value : $z=-1.64$

Since , the alternative hypothesis is two-tailed, so the test is a two-tailed test.

Using standard normal distribution table for z, we have

The P-value of two-tailed test will be :-

$2P(z>|-1.64|)=2P(z>1.64)\\\\=2(1-P(z\leq1.64))\\\\=2(1-0.9494974)\\\\=0.1010052$

Hence, the P-value = 0.1010052

6 0

3 years ago

pls hurry what is the area if the parallelogram that has a base of 10 cm longer and a height of 7 inches taller than the paralle

Len [333]

Answer:

Area=bh

10.5 in^2 =(3/4 in) (h in)

h=10.5/(3/4)=10.5/.75=14 in

Height = 14 in.

7 0

3 years ago