3 years ago

Please answer someone!!!

Mathematics

1 answer:

Step2247 [10]3 years ago

8 0

Answer:

True

Step-by-step explanation:

$\sqrt{(xy)^3}$ =
$((xy)^{1/2})^3$ =
$(xy)^{{1/2}*3}$ =
$(xy)^{3/2}$

The answer is TRUE

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Im confused that's all - If 80% is 75 marks, what is full marks

never [62]

Let the full marks be represented by = x

As given, 80% of x is 75

So,

$\frac{80}{100}*x=75$

x= $80x=7500$

x=93.75

Hence, full marks is 93.75

We can check also- $\frac{80}{100}*93.75$ =75

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3 years ago

3/4 x 3 2/5 - 5/5(find the value of each of the following)

Triss [41]

The value of the given expression is $\frac{-13}{20}.$

Solution:

Given expression is $\frac{3}{4} \times3\frac{2}{5}-\frac{5}{5}$ .

Let us first convert mixed fraction into improper fraction.

$3\frac{2}{5}=\frac{(3\times5)+2}{5}=\frac{17}{5}$

Substitute this in the given expression.

$\frac{3}{4} \times3\frac{2}{5}-\frac{5}{5}=\frac{3}{4} \times\frac{7}{15}-\frac{5}{5}$

$=\frac{21}{60}-\frac{5}{5}$

To simplify the above expression, 21 and 60 are cancelled by 3.

$=\frac{7}{20}-\frac{1}{1}$

Do cross multiplication to make the denominator same.

$=\frac{7}{20}-\frac{20}{20}$

$=\frac{7-20}{20}$

$=\frac{-13}{20}$

The value of the given expression is $\frac{-13}{20}.$

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3 years ago

F(x)=-x^2+6x+4 f(x)=−x 2 +6x+4

snow_lady [41]

Answer:

x = 3 - 2 (3)

Step-by-step explanation:

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2 years ago

In the diagram below segment DEF is shown (since all three letters are shown, they are collinear). If

monitta

Answer:

x = 4

Step-by-step explanation:

Given

DE = 3x + 2, EF = x + 5, DF = 23

As per segment addition postulate

DE + EF = DF

Substituting values:

3x + 2 + x + 5 = 23
4x + 7 = 23
4x = 16
x = 4

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3 years ago

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Ivahew [28]

Answer: this one is confusing

Step-by-step explanation:

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