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3 years ago

4. John wants to cover a box entirely with silver paper. How many square centimetres

Mathematics

1 answer:

masya89 [10]3 years ago

8 0

Answer:

l=22cm

b:16cm

h:10cm

surface area =2(lb+bh+lh)=2(22*16+16*10+22*10)

=1464cm²

a=2.5dm

area cubical soda cracker box=6a²=6*2.5²=37.5dm²

r=1.5dm

area of ball=4πr²=4π×1.5²=28.27dm² per ball

for 10 bal =28.27×10=282.6dm²

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Find the value of c that makes each trinomial a perfect square<br> x^2-19x+c<br> Please Help! :)

tensa zangetsu [6.8K]

The value of c is $\frac{361}{4}$

Explanation:

Given that the trinomial is $x^2-19x+c$

We need to determine the value of c such that the trinomial is a perfect square.

The value of c can be determined using the formula,

$c=(\frac{b}{2})^2$

From the trinomial, the value of b is given by

$b=-19$

Substituting the value of b in the above formula, we have,

$c=(\frac{-19}{2} )^2$

Squaring both the numerator and denominator, we have,

$c=\frac{361}{4}$

Thus, the value of c is $\frac{361}{4}$ which makes the trinomial a perfect square.

4 0

3 years ago

A clothing store offers a shirt in 5 colors, in long or short sleeves, with a choice of three different collars. How many ways c

Igoryamba

That is just multiply the number of choices for each
5 colors
2 lengths of sleaves
3 colors

5*2*3=30

answer is 30
C is answer

5 0

4 years ago

Read 2 more answers

Example 1: Simplify the expression,<br> 127 - 2(3+4)

astra-53 [7]

Answer:

113

Step-by-step explanation:

127 - 2(3+4)

127 - 2(7)

127-14

113

5 0

3 years ago

362x = 63x - 7<br> solving exponential equations

Mice21 [21]

Answer:

-7/299

Step-by-step explanation:

362x-63x = -7

299 = -7

x = -7/299

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7 0

3 years ago

May I please get some help with this

g100num [7]

Answer:

the answer is negative reciprocals ( opposite reciprocals)

Step-by-step explanation:

because they form right angles

7 0

3 years ago

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