3 years ago

2 (x + 4) = 4.2 (x - 2) - 2x

Mathematics

2 answers:

inessss [21]3 years ago

7 0

I really don’t know the answer

dalvyx [7]3 years ago

6 0

Answer:

X=82

Step-by-step explanation:

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What is 3/4 of 4/5=

r-ruslan [8.4K]

Answer:

answer: 15/16 Hope this helps!

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2 years ago

A student graduated from a 4-year college with an outstanding loan of

melamori03 [73]

Answer:

University student has more debt

Step-by-step explanation:

9650-8455/1865 =0.64 College student

12360-10326/2143 =0.95 University student

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3 years ago

John’s teacher wants to buy giant cookies for the entire class of cookies cost $2.40 each write an equation that shows how many

krek1111 [17]

40 ÷ 2.40= 16.66
the teacher can buy 16 cookies

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3 years ago

A steel pipe is being carried down a hallway 9 ft wide. At the end of the hall there is a right-angled turn into a narrower hall

Rudiy27

Answer:

21.62m

Step-by-step explanation:

first draw the the pipe

second you need know wich is the angle between the pipe and the corner

β=Tan^-1(6/9)=33.7

find the components using tow triangles

a=9/cos(33.7)=10.81m

b=6/sen(33.7)=10.81m

finally sum the leghts

L=10.81+10.81=21.62mm

attached procedure

8 0

3 years ago

Find the equation of a parabola with a vertical axis and its vertex at the origin and passing through the point (-2, 3).

jonny [76]

Answer:

$y=\frac{3}{4}x^2$

Step-by-step explanation:

Hi there!

Because we're given the vertex of the parabola, we can determine its equation in vertex form:

$y=a(x-h)^2+k$ where the vertex is $(h,k)$

Plug in the vertex (0,0)

$y=a(x-0)^2+0\\y=a(x)^2\\y=a(x-0)^2+0\\y=ax^2$

Now, we must solve for a. Plug in the given point (-2,3) and solve for a:

$3=a(-2)^2\\3=4a\\\frac{3}{4} =a$

Therefore, the value of a is $\frac{3}{4}$ . Plug this back into $y=ax^2$ :

$y=\frac{3}{4}x^2$

I hope this helps!

5 0

3 years ago