Ask question

Ask question

All categories

3 years ago

10

Lissette's age is 3 years less than twice the age of her sister Francesca. Lissette is 13. Write an equation that can be used to

find Francesca's age, f. Explain how to find the answer. Justify each step in the equation. How old is Francesca?

1 answer:

Katen [24]3 years ago

3 0

let L be <span>Lissette's age

and F </span><span>Francesca age

2 F - 3 = 13

2F= 16

F = 16/2 =8

</span>

You might be interested in

A new aircraft control system is being designed that must be 98.0% reliable. This system consists of two components in series.

sweet [91]

Answer:

98.99%

Step-by-step explanation:

The combined reliability of both components must be 98%. Given that both components must be functional and have the same reliability 'r', the minimum value of 'r' that meets the system requirements is given by:

$0.98 = r^2\\r=0.9899=98.99\%$

The level of reliability required for each component is 98.99%.

6 0

2 years ago

Find the measure of C to the nearest degree.

Alisiya [41]

Let the ∠C be : θ

From the figure, We can see that the Side which is opposite to angle θ is measuring 7 units

Also, We can notice that Hypotenuse is 11 units

As we are dealing with opposite and hypotenuse, we can clearly use Sinθ to find out the angle θ

We know that :

$\bigstar \ \ \boxed{\sf{Sin\theta = \dfrac{Opposite \ Side}{Hypotenuse}}}$

$\implies \sf{Sin\theta = \dfrac{7}{11}}$

$\implies \sf{\theta = Sin^{-1}\bigg(\dfrac{7}{11}\bigg)}$

$\implies \sf{\theta = 39.52^{\circ}}$

<u>Answer</u> : The measure of ∠C to the nearest degree is 38°

3 0

3 years ago

How many planes of symmetry does a rectangular pyramid has?<br>

Tju [1.3M]

Answer:

6

Step-by-step explanation:

6 0

2 years ago

HELP FAST I JUST NEED ANSWER

lukranit [14]

Answer:

449.60 or yellow

Step-by-step explanation:

5 0

2 years ago

Solve for r.<br> -13 = r/9 +8

love history [14]

R/9 = -21
Multiply by 9
r = -189

4 0

2 years ago

Read 2 more answers