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Whitepunk [10]
3 years ago
15

Can you guys help me with these two questions? Please? I’m stuck ;v;

Mathematics
1 answer:
Fofino [41]3 years ago
7 0

Answer:

For no 4 yes he is correct

Step-by-step explanation:

because commutative property means A+B=B+A and 7s+5s+8=12s+8

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At what values of x does the graph of f(x) = sin x intersect the x-axis?
kakasveta [241]

Step-by-step explanation:

n\pi \ \\

where n is an element of Integer

* the values of sinx intersects the x-axis when sinx=0

for example:

sin0°=sin180°=sin360°=0

4 0
3 years ago
Plzzzzzz helppppp meeee !!!
Anon25 [30]

Answer:

Corresponding side of AB is FE

Corresponding side of CB is DE

Corresponding side of AC is FD

k =2

DE = 6

FD=10

Step-by-step explanation:

Given

\triangle ABC and \triangle FED

See attachment for triangles

Solving (a): Corresponding side of AB

Going by the names of the triangle, the corresponding sides are:

AB and FE; CB and DE; AC and FD

Hence, the corresponding side of AB is FE

Solving (b): Corresponding side of CB

This has been solved in (a) above.

The corresponding side of CB is DE

Solving (c): Corresponding side of AC

This has been solved in (a) above.

The corresponding side of AC is FD

Solving (d): Scale factor from ABC to FED

To do this, we simply divide the lengths of corresponding sides.

The scale factor k is:

k = \frac{FE}{AB}

k = \frac{8}{4}

k =2

Solving (e): Length of DE

We make use of the scale factor calculated in (d) above

k = \frac{DE}{CB}

2 = \frac{DE}{3}

DE = 2 * 3\\

DE = 6

Solving (f): Length of FD

Using Pythagoras:

FD^2 = DE^2 + EF^2

FD^2 = 6^2 + 8^2

FD^2 = 100

FD = \sqrt{100

FD=10

7 0
3 years ago
The ice skating rink charges an hourly fee for skating and $3 to rent skates for the day. Gillian rented skates and skated for 3
Mila [183]
C(x) = 6x + 3

$6 per hr..and $3 for the skates

check..
c(x) = 6x + 3
he skated for 3 hrs and was charged $21
c(3) = 6(3) + 3
c(3) = 18 + 3
c(3) = 21
<span>.so it is c(x) = 6x + 3</span>
8 0
3 years ago
Read 2 more answers
yahir has 1/2 gallon of milk in a container. He pours 1/16 gallon in a mixing bowl. What fraction of a gallon does yahir have le
fgiga [73]
I made the denominators the same 
8/16=1/2
I subtracted 1/16 from 8/16
8/16 - 1/16+ 7/16
Yahir has 7/16 of a gallon of milk left
4 0
3 years ago
Read 2 more answers
Arithmetic sequences ; basic algebra please help !
kramer

Step-by-step explanation:

an arithmetic sequence means that every new term is the old term plus a constant number.

in our case that constant is +50.

and our starting value a0 = 250

so, the first 4 terms are

$250, $300, $350, $400

for the function formula we know

a0 = $250

a1 = a0 + 50 = 250 + 50 = $300

a2 = a1 + 50 = a0 + 50 + 50 = a0 + 2×50 = $350

a3 = a2 + 50 = a0 + 3×50 = $400

so, we see

an = a0 + n×50 = 250 + 50n

therefore,

f(n) = 250 + 50n

after 9 months saving we reached a9, meaning n=9.

f(9) = 250 + 50×9 = 250 + 450 = $700

6 0
3 years ago
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