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3 years ago

What is 7 1/2 + (-8/9)

Mathematics

2 answers:

Leokris [45]3 years ago

8 0

Answer:

i got 6.6? maybe that helps (:

sleet_krkn [62]3 years ago

7 0

Answer: 623 /18

Step-by-step explanation:

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Tom gets $12 off a box of chocolates that had an original price of $48. What percentage is the discount ?

kakasveta [241]

The discount percentage is %25

3 0

3 years ago

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The ratio of width to length of a rectangle is 7:10.The width of the rectangle is 91 cm.

kvasek [131]

Answer:

Length= 130 cm

For, Width= 91 cm

Step-by-step explanation:

Ratio of the width to the length of the rectangle = 7:10

Width of the rectangle= 91 cm

$\frac{Width}{Length} =\frac{7}{10}$

As, Width = 91 cm

$\frac{91}{Length} =\frac{7}{10}$

On, Cross multiplication the fraction:

$91*10=7*Length$

$7*Length=910$

Dividing by '7' both the sides:

$Length=\frac{910}{7}\\\\ Length=130cm$

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3 years ago

Use Use an element argument to prove the state (A-B)U(ANB) = A" is true. he statement "For all sets A and B,

lys-0071 [83]

Answer with Step-by-step explanation:

We have to prove that

$(A-B)\cup (A\cap B)=A$ is true for all sets A and B

Let $x\in(A-B)\cup (A\cap B)$

Then $x\in(A-B)$ or $x\in(A\cap B)$

$x\in A$ and $x\notin B$ or $x\in A\;and\; x\in B$

Hence, $x\in A$

Conversely ,Let $x\in A$

Then x belongs to A and x does not belongs to B then

x belongs to A- B

Or x belongs to A and x belongs to B then x belongs to $A \cap B$

Hence, $x\in( A-B)\cup (A\cap B)$

Therefore, $(A-B)\cup (A\cap B)=A$

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3 years ago

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The length of each side of a cube is x cm. If x is an interference,why can’t the volume of the cube equal 15 cm

slamgirl [31]

we don't know what the value of "X" is, so therefore, we cannot conclude that it is 15 cm.

5 0

2 years ago

Please help with scale factor!!!!!!!! I will mark brainliest if right! Two rectangular prisms have a side scale factor of 1/4. I

Agata [3.3K]

Answer:

1/16
720 cm²

Step-by-step explanation:

Area is the product of two dimensions.

<u>If the scale factor is 1/4, the ratio of the areas will be: </u>

(1/4)² = 1/16

The smaller prism has a surface are of 45 cm².

<u>The larger prism has a surface area:</u>

45*16 = 720 cm²

5 0

2 years ago