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2 years ago

Can someone please help Me

Mathematics

1 answer:

Crank2 years ago

4 0

Answer:

$3735

Step-by-step explanation:

2/5 = 8/20

8/20 + 7/20 = 15/20 = 3/4

3/4*4980 = 3735

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PLEASE HELP

kifflom [539]

$\\ \sf\longmapsto \dfrac{x^2-1}{x^2+5x+4}\leqslant 0$

Solving denominator

$\\ \sf\longmapsto x^2+5x+4>0$

$\\ \sf\longmapsto x^2+4x+x+4>0$

$\\ \sf\longmapsto x(x+4)+1(x+4)>0$

$\\ \sf\longmapsto (x+4)(x+1)>0$

$\\ \sf\longmapsto x>-4\:or x>-1$

Hence x $\neq$ -1
x can't be 0 as it makes function undefined

$\\ \sf\longmapsto -4$

5 0

2 years ago

What is the measure of HJ?

victus00 [196]

Answer:

Step-by-step explanation:

As u can see there is 27 u can upset it to j

8 0

3 years ago

There are 63 students in band. This represents 30% of the grade. How many students are in the entire grade

almond37 [142]

So, the question is 63 is 30% of what number?

That can translate to the equation

63 = 30% · x or 63 = 0.3x

Divide by 0.3 and you get x = 210.

There are 210 students in band.

8 0

3 years ago

Read 2 more answers

Please help and explain <br>Which represents the value of x?

IRINA_888 [86]

The first option would be the correct answer because you have the outer angle at 121 degrees and a straight angle adds up to 180 degrees so 121 - 180 = 59. Now you have the original angle on the inside which is 47 degrees and you add 47 + 59 and you get 106. Since this shape is a triangle you would do 180 - 106 to get your last angle which would be 74. Hope this helps!

6 0

2 years ago

A cylinder has volume 78 cm3 . What is the volume of a cone with the same radius and height? A 26 cm3 B 39 cm3 C 156 cm3 D 234 c

otez555 [7]

Answer:

Option A - $26 \mathrm{cm}^{3}$