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4 years ago

(42-9)/(5+6)+(21-1)/5

Mathematics

1 answer:

alexandr1967 [171]4 years ago

8 0

7 is the answer on the calculator you could use that

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902

viktelen [127]

Answer:

B. 99.098%

Step-by-step explanation:

4 0

3 years ago

Is this an identity? <br> 1+sec^2x=tan^2x

amid [387]

No, the correct identity is $\tan^2(x)+1=\sec^2(x)$ . It is obtained by dividing the both sides of the Pythagorean Trigonometric Identity by cos²(x):

$\sin^2(x)+\cos^2(x)=1\\\\
\dfrac{\sin^2(x)+\cos^2(x)}{\cos^2(x)}=\dfrac{1}{\cos^2(x)}\\\\
\dfrac{\sin^2(x)}{\cos^2(x)}+\dfrac{\cos^2(x)}{\cos^2(x)}=\dfrac{1}{\cos^2(x)}\\\\
\boxed{\tan^2(x)+1=\sec^2(x)}~~\blacksquare$

6 0

4 years ago

Which algebraic expression represents this phrase? The product of 34 and the number of pounds

larisa [96]

Answer:

D. 34 * p

Multiply them dude...

6 0

4 years ago

Read 2 more answers

Is the statement {0}=ø true or false

Schach [20]

Answer:

False

Step-by-step explanation:

This statement is false

{0}=ø

The first parts {0} says there is a zero in the set

The second item says it is an empty set

5 0

4 years ago

Please answer both A. and B.<br><br><br> Thank you!

ioda

Answer: (b)-175 ft

Step-by-step explanation:

In $\triangle ABC\ \text{and}\ \triangle CDE$

$\angle ACB=\angle ECD\quad [\text{vertically opposite angles}]\\\angle ABC=\angle CDE\quad [\text{Each angle is }90^{\circ}]\\\therefore \triangle ABC \sim\ \triangle CDE\quad [\text{by AA similarity criteria}]$

(ii)for similar triangles, we can write

$\Rightarrow \dfrac{100}{d}=\dfrac{4x}{7x}\\\\\Rightarrow d=100\times \dfrac{7}{4}=175\ ft$

5 0

3 years ago