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2 years ago

Select all of the situations below that can be modeled by the expression 4 + 3x.

Mathematics

1 answer:

Hatshy [7]2 years ago

3 0

Answer:

1 2 3

Step-by-step explanation:

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Simon and his niece Marcie are comparing their ages to see if there is a Mathematical connection. They find that Simon is three

Rom4ik [11]

Answer:

Simon's Age = 47

Marcie's Age = 11

Step-by-step explanation:

The question is to find Simon's age and Marcie's age.

Let Simon's age be x and Marcie's age be y

Simon is 3 years more than 4 times marcie, so we can write:

x = 4y + 3

Also,

Sum of their ages is 58, so we can write:

x + y = 58

or x = 58 - y

Now, we substitute this into 1st equation and solve for y first:

$x = 4y + 3\\58-y = 4y + 3\\58-3=4y+y\\55=5y\\y=\frac{55}{5}\\y=11$

We know

x = 58 - y

so,

x = 58 - 11

x = 47

So,

Simon's Age = 47

Marcie's Age = 11

3 0

2 years ago

A hat factory makes 2 types of hats. Each day, the factory makes 400 of each type of hat. How many hats does the factory make ea

Lostsunrise [7]

The factory makes a total of 800 hats

3 0

2 years ago

25 points? pls idk the answer :((( help D:

DedPeter [7]

Answer:

18x = 7.2

x =.4

Step-by-step explanation:

Let x = the weight of one box

We have 18 boxes that weigh 7.2 lbs

18x = 7.2

Divide each side by 18

18x/18 = 7.2/18

x =.4

6 0

2 years ago

Read 2 more answers

WILL GIVE BRAINLEIST DUE AT 9:45 P.M. PLS HURRY SUPER EASY. Write a division problem that has a solution of 42.

Llana [10]

Answer:

84/2=42

Step-by-step explanation:

The multiplication problem 42×2 has a product of 84, this also means that 84/2 is a dividend of 42. This means that 84/2 is 42

5 0

2 years ago

Please help me with this problem, please

Harman [31]

Answer:

sin(x) = 5/13

cos(y) = 5/12

Therefore, sin(x) = cos(y)

Step-by-step explanation:

Trig ratios:

$sin(\theta)=\dfrac{O}{H}\\\\\\cos(\theta)=\dfrac{A}{H}\\\\\\tan(\theta)=\dfrac{O}{A}$

where $\theta$ is the angle, O is the measure of the side opposite the angle, A is the measure of the side adjacent to the angle and H is the hypotenuse, of a right triangle

We have been given the measures of the two legs, so we can find the measure of the hypotenuse by using Pythagoras' Theorem $a^2+b^2=c^2$

(where a and b are the legs and c is the hypotenuse of a right triangle)

$\implies 5^2+12^2=c"\\\\\implies 169=c^2\\\\\implies c=\sqrt{169}\\\\ \implies c=13$

Now we can use the trig ratios:

$\implies sin(x)=\dfrac{5}{13}$

$\implies cos(y)=\dfrac{5}{13}$

Therefore, sin(x) = cos(y)

8 0

2 years ago