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3 years ago

Write an equation and solve. Round to the nearest hundredth where necessary. 19 is what percent of 40?

Mathematics

2 answers:

Ksju [112]3 years ago

5 0

The first one is B. idk the second

olya-2409 [2.1K]3 years ago

4 0

Step-by-step explanation:

(a) Let x% of 40 = 19

Therefore, $\frac{x}{100} \times 40 = 19$

$\frac{4x}{10} = 19$

x = $\frac{190}{4}$

x = 47.5

Thus, 47.5% of 40 = 19.

(b) It is given that $\frac{5}{x} = \frac{4}{8}$

$x = \frac{5 \times 8}{4}$

x = 10

Thus, we can conclude that the value of x = 10.

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Step-by-step explanation:

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3 years ago

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lilavasa [31]

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3 years ago

Read 2 more answers

A computer program contains one error. In order to find the error, we split the program into 6 blocks and test two of them, sele

Aleksandr-060686 [28]

There are $\dbinom62$ ways of selecting two of the six blocks at random. The probability that one of them contains an error is

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7 0

3 years ago

Show with work please.

kolbaska11 [484]

Answer:

$\csc \left(\theta-\frac{\pi }{2}\right)=0.73$

Step-by-step explanation:

The identity you will use is:

$\csc \left(x\right)=\frac{1}{\sin \left(x\right)}$

So,

$\csc \left(\theta-\frac{\pi }{2}\right)$

$\csc \left(\theta-\frac{\pi }{2}\right)=\frac{1}{\sin \left(-\frac{\pi }{2}+\theta\right)}$

Now, using the difference of sin

Note: state that $\text{sin}(\alpha\pm \beta)=\text{sin}(\alpha) \text{cos}(\beta) \pm \text{cos}(\alpha) \text{sin}(\beta)$

$\csc \left(\theta-\frac{\pi }{2}\right)=\frac{1}{-\cos \left(\theta\right)\sin \left(\frac{\pi }{2}\right)+\cos \left(\frac{\pi }{2}\right)\sin \left(\theta\right)}$