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2 years ago

There is 2 questions and I would like time to answer both of them! Please and thank you!

Mathematics

2 answers:

Nastasia [14]2 years ago

7 0

City M was colder than city L because -7<-2

the reflection is literally just the positive version of (-3.20, -6.05)

morpeh [17]2 years ago

4 0

#1 is b and #2 is also b ,, i think..so sorry if i’m wrong!

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What is the sign of f on the interval -2

TEA [102]

Answer:

$f$ is sometimes positive and sometimes negative.

Step-by-step explanation:

$f(x)=(x-3)(x+2)(x+4)(x+4)(x-1)(2x-9)$

Take $x=-1\in(-2,\frac{9}{2})\ as-2$

$f(-1)=(-1-3)(-1+2)(-1+4)(-1-1)(-2-9)\\\\=(-4)(1)(3)(-2)(-11)\\\\=-264\\\\f(-1)$

Take $x=2\in(-2,\frac{9}{2})\ as\ -2$

$f(2)=(2,-3)(2+2)(2+4)(2-1)(2\times2-9)\\\\=(-1)(4)(6)(1)(-5)\\\\=120\\\\f(2)>0$

Hence $f(x)$ for $x=-1$ and $f(x)>0$ for $x=2$

So $f$ is sometimes positive and sometimes negative in the interval.

3 0

3 years ago

Question 6 of 10

Rudik [331]

If the series is A B C D then the next one is E

7 0

2 years ago

What is 39 squared? A. 39 B. 1,482 C. 1,521 D. 78

iogann1982 [59]

Hey There!

The answer to you're question is C, because squared means to the power of two. So, 39 * 39 is 1,521.

Have A Brainly Day!

5 0

2 years ago

How would I show that the slope is constant (Topic is: Graphing Proportional Relationships and Defining Slope)

Marysya12 [62]

Answer:

Pick 3 or four points on the ray that land on a point (not (5.5, 2.5) more like whole numbers (3,3). These are just examples.)on the slope. Then find the slope of all points. if the answers are the same, then it is constant

Step-by-step explanation:

4 0

2 years ago

Ask an expert 2+3/10X>=13/20 Solve for inequality Thanks!

dolphi86 [110]

Answer:

The answer is in the picture.

Step-by-step explanation:

$2+\frac{3}{10x}\geq\frac{13}{20} \\\\\frac{3}{10x}\geq\frac{13}{20} -2 \\\\\frac{3}{10x}\geq\frac{13}{20} -\frac{40}{20} \\\\\frac{3}{10x}\geq-\frac{27}{20} \\\\3\geq-\frac{27}{20}*10 x \\\\3\geq-\frac{270}{20} x\\\\3\geq-\frac{27}{2} x \\\\3*-\frac{2}{27} \leq x\\\\-\frac{6}{27} \leq x\\\\-\frac{2}{9} \leq x$

Also x cannot equal to 0 if you plug in into the original equation the answer is indefinite/not solution.

8 0

1 year ago