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4 years ago

Find the missing number in this proportions

Mathematics

1 answer:

iren2701 [21]4 years ago

5 0

Answer:

Step-by-step explanation:

If 28 ends up becoming 4, 7 is what they have to divide to make 4 a numerator. That means you have to divide 63 by 7 which would make 9.

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Pre Calc for one of my classes

GREYUIT [131]

Use index form. N= a^x becomes log a (N) = x
Therefore your question becomes (log 2.3 (13))/9 = x
And rounding to 3 decimals gives you 0.342

8 0

3 years ago

6. If four numbers are in proportion, then the terms equals the product of<br>

snow_tiger [21]

Answer: If four numbers are proportional, a : b = c : d, then the product of the extremes is equal to the product of the means. ad = bc

3 0

2 years ago

Before we can make the mashed potatoes, we need to boil some water. The water starts out at room temperature, 70° F, and increas

Karolina [17]

Answer:

Part a) $y=50t+70$

Part b) $t=2.84\ min$

Step-by-step explanation:

Part a) Create a linear equation

Let

t ----> the time in minutes

y ---> the temperature in °F

we know that

The linear equation in slope intercept form is equal to

$y=mt+b$

where

m is the slope or unit rate of the linear equation

b is the y-intercept or initial value of the linear equation

In this problem we have

The slope m is equal to

$m=50\° F\ per\ minute$

The y-intercept is

$b=70\° F$

substitute

$y=50t+70$

Part b) How many minutes until the water boils at 212° F?

For y=212° F

substitute in the linear equation and solve for t

$212=50t+70$

$50t=212-70$

$50t=142$

$t=2.84\ min$

6 0

3 years ago

What is the sign of A times ( - b)

mojhsa [17]

Answer:

i believe it's negative.

Step-by-step explanation:

if the question is asking A x -B it should be negative because it's a negative number times a positive. hope i helped.

3 0

3 years ago

I need help with finding x. Can someone help me please?

11Alexandr11 [23.1K]

Answer:

x=25

Step-by-step explanation:

these angles are of the same measure, so i set the two values equal to eachother. it looks like

75=(4x-25)

and solve for x

I HOPE THIS IS RIGHT!! have a great day

3 0

3 years ago