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3 years ago

4.

Mathematics

2 answers:

ohaa [14]3 years ago

6 0

Answer:

$60.00 in his savings account per week

Step-by-step explanation:

First, we can convert the information given into points so we can more easily find the rate of change, or slope:

(5, 340) and (9, 580)

Then, we can subtract the y-values and x-values of both, then divide those differences, to find the slope. Remember that the change in y goes on top of the division problem and the change in x goes on the bottom of the division problem:

(580-340)/(9-5) = 240/4 = 60

So, $60 in his savings account per week.

fiasKO [112]3 years ago

4 0

Answer:

he saves 18.45 dollars in each week

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Help me solve this please

drek231 [11]

Answer:

x is 46.67

y is 28.4°

Step-by-step explanation:

To solve for x we use sine

sin ∅ = opposite / hypotenuse

AC is the opposite

x is the hypotenuse

so we have

sin 59° = 40 / x

x sin 59 = 40

Divide both sides by sin 59

x = 40/sin 59

x = 46.67

To solve for y we also use sine

sin y = 30/ 63

y = sin^-1(30/63)

y = 28.4°

Hope this helps you

3 0

4 years ago

|x – 6| ≥ 1 how do i solve this?

s344n2d4d5 [400]

bearing in mind that an absolute value expression in a twin expression, since it has a ± versions, therefore,

$\bf |x-6| \ge 1\implies \begin{cases}
+(x-6) \ge 1\implies x\ge 7\\[0.8em]
-(x-6) \ge 1\implies x-6\stackrel{\stackrel{notice}{\downarrow }}{\le}-1\\
~\hspace{10em}x \le 5\\[-0.5em]
\hrulefill\\
~\hfill 7\le x\le 5~\hfill
\end{cases}$

5 0

4 years ago

Which of the following is another way to express the equation 16 = -9 + z?

babunello [35]

Answer:

It can be anything if you put in the right number

Step-by-step explanation:

6 0

3 years ago

For each function below, determine whether or not the function is injective and whether or not the function is surjective. Be su

olga55 [171]

Answer:

The function is neither injective nor surjective

Step-by-step explanation:

f: P({1,2,3}) -> N is given by f(A) = |A|

where P(S) denotes the power set of a set S and |A| the number of elements of A

$P(\left \{ 1,2,3 \right \})=\left \{ \varnothing ,\left \{ 1 \right \},\left \{ 2 \right \},\left \{ 3 \right \},\left \{ 1,2 \right \},\left \{ 1,3 \right \},\left \{ 2,3 \right \},\left \{ 1,2,3 \right \} \right \}$

$f(\varnothing )=0$

$f(\left \{ 1 \right \})=f(\left \{ 2 \right \})=f(\left \{ 3 \right \})=1$

$f(\left \{ 1,2 \right \})=f(\left \{ 1,3 \right \})=f(\left \{ 2,3 \right \})=2$

$f(\left \{ 1,2,3 \right \})=3$

The function is not injective, for

$P(\left \{ 1 \right \})=P(\left \{ 2 \right \})$

but

$\left \{ 1 \right \}\neq \left \{ 2 \right \}$

The function is not surjective either, because 5 is a natural number which is not the image of any element A under f, i.e., there is no element in A in P({1,2,3}) such that f(A)=5

6 0

4 years ago

Help help help plzzzz

777dan777 [17]

Answer:

2.5824 × 10⁶

204/5.3 = 38.49056. Round to 38.49

Step-by-step explanation:

scientific notation

1.20 × 2.152 = 2.5824.

4 0

3 years ago

Read 2 more answers