3 years ago

I need help with this question please

Mathematics

1 answer:

Vedmedyk [2.9K]3 years ago

6 0

I know that x= 110

I know this because 196÷20=9.8

so, 1078÷9.8=110

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PLS HELP ME..........

bija089 [108]

Answer:

x = 2

Step-by-step explanation:

x is side of right triangle with other sides:

√20 and 8/2 = 4

Then x is:

x² = √20² - 4²
x² = 4
x = 2

8 0

3 years ago

Let U=5i-9j and V=-8i+8j. find U-V

liraira [26]

$U-V\\
5i-9j-(-8i+8j)=0
\\5i-9j+8i-8j=0
\\13i-17j=0$
is your final answer.

5 0

4 years ago

A piece of string that is 9.4 meters long is cut into two pieces. One piece is 3 times as long as the other. Find the length of

xenn [34]

9.4=3x+x

9.4=4x

=2.35

the shorter piece is 2.35 and the longer piece is 7.05

5 0

3 years ago

which rate can you set 7 miles over 1 hour equal to in order to find the distance traveled in 49 hours at 7 miles per hour

IrinaVladis [17]

Answer:

Step-by-step explanation:

time = 49 hours

speed = 7 miles/hour

speed = distance / time

∴ distance = speed × time

= 7 × 49

= 343 miles

8 0

3 years ago

(ab^2 x -b^4a^3)^2 What is the answers

Umnica [9.8K]

Answer:

$\left(ab^2x-b^4a^3\right)^2:\quad a^2b^4x^2-2a^4b^6x+a^6b^8$

Step-by-step explanation:

Given the expression

$\left(ab^2\:x\:-b^4a^3\right)^2$

solving the expression

$\left(ab^2\:x\:-b^4a^3\right)^2$

$\mathrm{Apply\:Perfect\:Square\:Formula}:\quad \left(a-b\right)^2=a^2-2ab+b^2$

$a=ab^2x,\:\:b=b^4a^3$

so the expression becomes

$=\left(ab^2x\right)^2-2ab^2xb^4a^3+\left(b^4a^3\right)^2$

$=a^2b^4x^2-2a^4b^6x+a^6b^8$

Thus,

$\left(ab^2x-b^4a^3\right)^2:\quad a^2b^4x^2-2a^4b^6x+a^6b^8$

3 0

3 years ago