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4 years ago

Which addition sentence could help solve this problem 3 + 5 + 7 =15

Mathematics

2 answers:

zheka24 [161]4 years ago

8 0

3+7=10 because three and seven are both in your equation so after adding 3 and 7 all you must do is add 5 to 10

Arturiano [62]4 years ago

8 0

Answer:

think about what you know regrouping. fill in each box. use words, numbers, and pictures, show as many ideas as you can

Step-by-step explanation:

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4. In the Department of Natural Sciences, 14 faculty members have a PhD, and 30 faculty

Dvinal [7]

Answer:

Step-by-step explanation:

We can start by making the table below to show the given numbers (red) and to assign a variable (x) to <em>the number we want to find: female PhDs</em>.

By subtracting the female numbers from the totals, we can find the corresponding numbers of male PhDs and non-PhDs.

The number of male non-PhDs is twice the number of male PhDs, so we have ...

2(14 -x) = 20 -x

28 -2x = 20 -x . . . . eliminate parentheses

8 = x . . . . . . . . . . . .add 2x-20

The number of female faculty with PhDs is 8.

4 0

4 years ago

What is the volume of a sphere with radius 9? Round to the tenths.

GrogVix [38]

Answer:

V=3053.6

Step-by-step explanation:

8 0

3 years ago

When x represents whole numbers less than 200, the function f(x) = 2x - 20 represents the profit earned from selling x carnation

solmaris [256]

Answer:

260

Step-by-step explanation:

When x represents whole numbers less than 200, the function

f(x) = 2x - 20 .......... (1)

represents the profit earned from selling x carnations for a school fund-raiser.

Therefore, the profit earned from selling 140 carnations for the school fund-raiser will be given by the equation (1) as

f(140) = 2(140) - 20 = 280 - 20 = 260.

Therefore, 260 is the value of f(140). (Answer)

8 0

4 years ago

Capital Value Suppose income from an investment starts (at time 0) at $6000 a year and increases linearly and continuously at a

nikdorinn [45]

The capital value$6507.63

Step-by-step explanation:

When an amount is compounded continuously interest it means the principal is continuously earning interest and the interest keeps earning on the interest earned. The formula to apply is;

$A=Pe^{rt}$

where P is the starting amount, r is the nominal annual interest rate, t is length of time the interest is applied, and e=2.71828

Given that, A=$6000, e=2.71828, r=0.05 and t=1

$A=6000*2.71828^{0.05}$

A=6307.63

Interest earned= 6307.63-6000 = $307.63

Where the investment increases linearly and at a constant rate of $200 a per , the linear model will be;

A=6000+200t where t is length of time the interest is applied, and A is the amount after t period of time

In this case t=1

A=6000+200*1

A=6000+200 =6200

Interest earned is= $6200-$6000=$200

Capital value = $6000+$307.63+$200 =$6507.63

Learn More

Interest compounded continuously:brainly.com/question/13009340

Keywords : capital value, investment, increases linearly, continuously rate

#LearnwithBrainly

7 0

3 years ago

18-4y=42 help, please?

juin [17]

18-4y=42

4y = 18-42

4y=-24

y = - 6

5 0

3 years ago