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Tresset [83]
3 years ago
8

- бх + 7(1-x) = -4(x-4) ​

Mathematics
1 answer:
enyata [817]3 years ago
7 0
6x + 7(1-x) = -4(x-4)
6x + 7 - 7x = -4x + 16
-x + 7 = -4x + 16
-x + 4x = 16 - 7
3x = 9
x =9/3
x = 3
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In triangle XYZ, angle Y = 45º and angle Z = 60º. If XZ = 4, then what is XY?
Katena32 [7]

Answer:

XY = 4.9

Step-by-step explanation:

Given

XZ= 4

\angle Y = 45

\angle Z = 60

Required

Determine the measure of side XY

To do this, we make use of sine law. This is as follows:

\frac{a}{\sin\ A} = \frac{b}{\sin\ B} = \frac{c}{\sin\ C}

In this case:

\frac{4}{\sin(45)} = \frac{XY}{\sin(60)}

Cross Multiply

XY * \sin(45) = 4 * \sin(60)

XY * 0.7071 = 4 * 0.8660

Make XY the subject

XY = \frac{4 * 0.8660}{0.7071}

XY = \frac{3.4640}{0.7071}

XY = 4.89888276057

XY = 4.9 -- <em>approximated</em>

3 0
3 years ago
Две противоположные стороны луга параллелепипеда - 550 м, а площадь - 23,1 га.
hichkok12 [17]

Answer:

I can't read this language

Step-by-step explanation:

4 0
3 years ago
Chris is reading a book that has nine-hundred seventy-eight pages in it. Every night
GaryK [48]

9514 1404 393

Answer:

  Every night

Step-by-step explanation:

The problem statement tells you ...

  "Every night Chris reads a number of pages that can be rounded to the nearest hundred."

Then it asks you ...

  "On what nights does Chris read a number of pages that can be rounded to the nearest hundred?"

If we take the problem statement at face value, the answer must be ...

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7 0
2 years ago
17/21- (3/7 + 2/7) please answer quick
adoni [48]

Answer:

2/21

Step-by-step explanation:

17/21 -(3/7 + 2/7)

First you add

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Then you want to subtract

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8 0
3 years ago
The population of a small town can be modeled by the equation where t is the number of years since the collection of the populat
liberstina [14]

The true statements is the population was 4800 when the collection of data began. (3rd option)

<h3>What is an exponential function?</h3>

An exponential equation can be described as an equation with exponents. The exponent is usually a variable.

The general form of exponential equation is f(x) = e^{x}

Where:

  • x = the variable
  • e = constant

When a population grows at an exponential rate, it usually has compound rate of growth. Compound growth refers to the geometric progression of a variable.

The exponential equation used to represent an exponential growth usually have this form:

FV = PV (1 + r)^n

Where:

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Given this exponential equation : f(x) = 4800 (1.02)^t

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To learn more about exponential functions, please check: brainly.com/question/26331578

#SPJ1

7 0
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