All categories

2 years ago

Pls help! Error Analysis problem

Mathematics

2 answers:

Gennadij [26K]2 years ago

7 0

Answer:

Ana made a mistake from line 2 to 3

Step-by-step explanation:

charle [14.2K]2 years ago

6 0

Answer:

Ana made a mistake from line 2 to 3

Step-by-step explanation:

From line 2 to 3, on the left side, ana added 2 and 3 but completely ignored the - in front of the 3. the correct answer would have been -x - 21 = 3x + 19

You might be interested in

Slope 1/4 passes point (-4,-3) what is slope intercept equation

tigry1 [53]

Answer:

Step-by-step explanation:

5 0

3 years ago

Find the value of x. The diagram is not to scale.

tester [92]

X=15 its simple since there's base angles and straight angle

7 0

3 years ago

Read 2 more answers

Help meeeeeeeeeeeeeee pleaseeeeeee

Rina8888 [55]

Answer: 2.5, 5.4

Step-by-step explanation:

$-16t^2 +126t=213\\\\16t^2 -126t+213=0\\\\t =\frac{-(-126) \pm \sqrt{(-126)^2 -4(16)(213)}}{2(16)}\\\\t \approx 2.5, 5.4$

8 0

1 year ago

Find the missing side lengths. Answers are in simplest radical form with the denominator rationalized

Roman55 [17]

Answer:

Option B.

Step-by-step explanation:

The given triangle is a right angle triangle.

In a right angle triangle,

$\tan \theta=\dfrac{Perpendicular}{Base}$

In the given triangle,

$\tan (45^{\circ})=\dfrac{v}{7}$

$1=\dfrac{v}{7}$

$7=v$

Using Pythagoras theorem, we get

$hypotenuse^2=Perpendicular^2+Base^2$

$u^2=v^2+7^2$

$u^2=7^2+7^2$

$u^2=2(7^2)$

Taking square root on both sides, we get

$u=\sqrt{2(7^2)}$

$u=7\sqrt{2}$

Therefore, the correct option is B.

6 0

2 years ago

X For f(x)=0.01(2) , find the average rate of change from x=3 to x=8.

NikAS [45]

Answer:

Option b. 0.496

Step-by-step explanation:

we know that

f(x)=0.01(2^{x})

The average rate of change is equal to

\frac{f(b)-f(a)}{b-a}

where

a=3

b=8

f(a)=f(3)=0.01(2^{3})=0.08

f(b)=f(8)=0.01(2^{8})=2.56

Substitute

\frac{2.56-0.08}{8-3}

\frac{2.48}{5}

0.496

3 0

2 years ago