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3 years ago

I have no clue how to do this problem.

Mathematics

1 answer:

Sindrei [870]3 years ago

7 0

Think about c/3 =4/1 and apply the cross multiplication rule since those two fractions are equal.
We get c•1= 3•4
c=12

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Using scalar multiplication, find 5u if u= <2, 4>.

kicyunya [14]

Using scalar multiplication, it is found that 5u = <10,20>.

<h3>What is scalar multiplication?</h3>

It is when a vector is multiplied by a constant, and it means that each term of the vector is multiplied by the constant.

In this problem, the vector is:

u = <2,4>

Since each term is multiplied by 5:

5u = <5 x 2, 5 x 4> = <10,20>.

To learn more about scalar multiplication, you can take a look at brainly.com/question/1821869

7 0

2 years ago

(Z-6) divided by 3 for z= 15.9

scoray [572]

Simply plug in $\sf{z=15.9}$ into $\sf{\frac{z-6}{3}}$

So:

$\sf{\frac{15.9-6}{3}}$

Simplify that more:

$\sf{\frac{9.9}{3}}$

And that finally becomes

$\sf{3.3}$

So when $\sf{z=15.9}$ the answer will be $\boxed{\sf{3.3}}$

4 0

3 years ago

Read 2 more answers

How many child tickets were sold that day?

ExtremeBDS [4]

$\huge\boxed{\fcolorbox{black}{red}{Answer}}$

first let's name a couples of variable

• the number of adults tickets sold: a

• the number of children tickets sold: c

From the problem we know

a + c = 128

and

$5.40c + $9.20a = $976.20

1) solve the equation to alpha

a+c-c = 128 -c

a+0=128-c

a=128-c

2) substitute (128 - c) for a in the second equation and solve to c

$5.40c + $9.20a = $976.20 become

$5.40c + $9.20(128 - c) = $976.20

$5.40c + ($9.20 × 128) - ($9.20 - c) = $976.20

$5.40c - $9.20c + $ 1177.6 = $976.20

($5.40 - $9.20)c +$1177.6 = $976.20

-$3.80c + $1177.6 = $9.76.20

-$3.80c + $1177.60 - $1177.60 = $976.20 - $1177.60

-$8.30c + 0 = $201.40

-$3.80c = - $201.40

-$3.80c. -$201.40

________. = _________

-$3.80. -$3.80

-$3.80c. -$201.40

________. = _________. - they are 4 cut the no

-$3.80. -$3.80

c = $201.40

________

3.80

c = 53

3 0

2 years ago

Look at the picture and answer both of the following.

masya89 [10]

Answer:

Step-by-step explanation:

$r(x)=2\sqrt{x} , s(x)=\sqrt{x} \\ rs(x)=2\sqrt{x} \sqrt{x} =2x\\rs(4)=8\\\\\frac{r}{s}(x) =\frac{2\sqrt{x} }{\sqrt{x} } = 2\\\frac{r}{s} (3) = 2$

3 0

3 years ago

Pls help need ASAP been stuck on these problems for a few now

kodGreya [7K]

Answer:

C. AC/BC = DF/EF

Step-by-step explanation:

Hi en that ∆ABC ~ ∆DEF, the corresponding sides of ∆ABC and ∆DEF would be proportional to each other.

AB corresponds to DE

AC corresponds to DF

BC corresponds to EF

Therefore,

hypotenuse over one of the leg of ∆ABC = hypotenuse over one of the corresponding legs of ∆DEF, which is:

AC/BC = DF/EF

8 0

3 years ago