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3 years ago

Can someone help me multiply this binomial?

Mathematics

2 answers:

muminat3 years ago

5 0

X^2 -3x -7x+21
i haven’t done polynomials in a long time so i’m probably wrong :)

Rus_ich [418]3 years ago

4 0

Answer:x^2 - 10x +21

Step-by-step explanation:

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Find the slope and the y-intercept of the graph of the linear equation.

pantera1 [17]

Answer:

Yintecept is 0

Step-by-step explanation:

because it's y= Mx+b

but this one is y = mx

6 0

3 years ago

Billy buys light bulbs in packs of 8 for $20. The shipping cost is $10 regardless of the number of packs bought. Billy has only

kirill115 [55]

Answer:

Step-by-step explanation:

He can buy 5 boxes of light bulbs..

20 x 5= 100

He only has 120 to spend - the shipping = 110

He can't get another box of lightbulbs. Therefor he can only buy 5!

7 0

3 years ago

Read 2 more answers

7th grade math I needs some help

kiruha [24]

Answer:

Step-by-step explanation:

To find 5e. El change, find the difference between week 1 and 1.

56.92-(-16.54) = 56.92+16.54 = -73.46.

Note: this is negative, because we are calculating the difference.

Hope this helps

4 0

3 years ago

Mr. Aydlett is on an island 2 miles offshore and wishes to reach a coastal village 6 miles down a straight shoreline from the po

eimsori [14]

Answer:t=2.11 hr

Step-by-step explanation:

Given

Aydlett is 2 miles offshore and village is 6 miles down a straight line from the Point on the shore nearest the island

Person can row boat at 2 mph in water and can walk 5 mph in land

Let us suppose Person land the boat at a x miles from Point on the shore

thus time taken by him to reach

$t_1=\frac{\sqrt{x^2+2^2}}{2}$

Time taken person to reach village by land is

$t_2=\frac{6-x}{5}$

total time $=\frac{\sqrt{x^2+2^2}}{2}+\frac{6-x}{5}$

we need the time to be least so differentiate t w.r.t to x

$\frac{\mathrm{d} t}{\mathrm{d} x}=\frac{2x}{2\cdot 2\cdot \sqrt{4+x^2}}-\frac{1}{5}$

Equating Above term to zero to get minimum time

$\frac{x}{2\sqrt{4+x^2}}=\frac{1}{5}$

$25x^2=16+4x^2$

$x=\frac{4}{\sqrt{21}}$

Substituting x in time equation

$t=\frac{\sqrt{4+0.761}}{2}+\frac{6-0.872}{5}$

$t=2.116 hr$

5 0

3 years ago

PLZ HELP RN ASAP THX

Tom [10]

Answer:

x is equal to 61

y is equal to 29

7 0

3 years ago