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2 years ago

Please help me I really need to finish this

Mathematics

2 answers:

Rudik [331]2 years ago

5 0

Answer:

Step-by-step explanation:

Marianna [84]2 years ago

3 0

18. the area for each side is 1in^2 and there are 6 sides. so the area of 1 cube is 6 in^2. 6*3=18

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What are the solutions to the following system? StartLayout Enlarged left-brace 1st row negative 2 x squared + y = negative 5 2n

Yakvenalex [24]

Answer:

$(\sqrt{2},-1),(-\sqrt{2},-1)$

(StartRoot 2 EndRoot, negative 1) and (negative StartRoot 2 EndRoot, negative 1)

Step-by-step explanation:

we have

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

$y=-3x^{2} +5$ -----> equation B

solve by substitution

substitute equation B in equation A

$-2x^{2} +(-3x^{2} +5)=-5$

solve for x

$-5x^{2} +5=-5$

$-5x^{2}=-10$

$x^{2}=2$

$x=\pm\sqrt{2}$

<em>Find the value of y</em>

$y=-3x^{2} +5$

For $x=\sqrt{2}$ ----> $y=-3(\sqrt{2})^{2} +5=-1$

For $x=-\sqrt{2}$ ----> $y=-3(-\sqrt{2})^{2} +5=-1$

therefore

The solutions are

$(\sqrt{2},-1),(-\sqrt{2},-1)$

(StartRoot 2 EndRoot, negative 1) and (negative StartRoot 2 EndRoot, negative 1)

8 0

3 years ago

Read 2 more answers

question 9: find the radius of the cylinder with a volume of 45m cubed and a height of 9m round your anwser to the nearest tenth

tester [92]

Answer:

1.26 but rounded to the nearest 10 would be 1.3 so 1.3 is your answer

Step-by-step explanation:

4 0

3 years ago

The greens are Gavin g a well built in their backyard on Monday 110 feet of the well was dug and another 72 feet was dug on Tues

Simora [160]

Answer:

182 feets

Step-by-step explanation:

Given :

Feets dug on Monday 110 feets

Feets dug on Tuesday = 72 feets

Total number fo feets below the ground :

Feets dug on Monday + Feets dug on Tuesday

110 feets + 72 feets = 182 feets

Total feets below the ground is 182 feets

6 0

3 years ago

3over 7 = blank over 35

iragen [17]

Let blank be x

$\\ \sf\longmapsto \dfrac{3}{7}=\dfrac{x}{35}$

$\\ \sf\longmapsto 7x=35(3)=105$

$\\ \sf\longmapsto x=\dfrac{105}{7}$

$\\ \sf\longmapsto x=15$

3 0

2 years ago

Read 2 more answers

What are the simplest polynomial and rational function you can imagine?

mixas84 [53]

f(x) = 1/x

for rational function

7 0

2 years ago