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3 years ago

Can someone please help me? I am having a-lot of trouble!

Mathematics

1 answer:

Step2247 [10]3 years ago

3 0

Answer:

Step-by-step explanation:

Cost of 5 packet = $ 2m

Cost of 1 packet = $\frac{2m}{5}$

Cost of 3 packets = $\frac{2m}{5}*3=\frac{6m}{5}$

Change receive by her = $10 -\frac{6m}{5}\\\\$

$=\frac{10*5}{1*5}-\frac{6m}{5}\\\\=\frac{50}{5}-\frac{6m}{5}\\\\=\frac{50-6m}{5}$

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Can someone help me plz

enyata [817]

Answer:the answer is 420 :)

Step-by-step explanation:

5 0

3 years ago

Which of the following sets contain all roots of the polynomial

Zarrin [17]

All these given roots are contained in option C.

The given equation is :

$9x^{3}+9x^{2}-4x-4=0$

$9x^{2}(x+1)-4(x+1)=0$

$(9x^{2}-4)(x+1)=0$

$9x^{2}-4=0,x+1=0$

$x^{2}=\frac{4}{9},x=-1$

$x=\frac{2}{3},x=-1$

Roots = $-1,\frac{-2}{3} ,\frac{2}{3}$

Hence these lie in between $(\frac{-3}{2} ,\frac{3}{2})$

8 0

3 years ago

Lynn spent $21.90 at A Hill of Beans. She bought 2 fruit smoothies at a

Annette [7]

Answer:

$0.3

Step-by-step explanation:

8.90x2=17.8

1.75x2=3.5

17.8+3.5=21.3

21.90-21.3=0.6

0.6/2=0.3

6 0

3 years ago

Read 2 more answers

Is 432 a perfect cube?

Vika [28.1K]

Answer:

no its not a perfect cube.

4 0

3 years ago

Two right triangles are shown. First, find the missing leg of the triangle on the right. Then you have two lengths to use to fin

jasenka [17]

Answer:

x = 30m

Step-by-step explanation:

GIVEN :-

There are 2 right-angled triangles.

In the triangle on the right side ,

Hypotenuse = 26m
Base = 10m

In the triangle on the left side ,

Base = 18m

TO FIND :-

Length of the common perpendicular to both triangles.
Length of the hypotenuse of the triangle on the left side.

FACTS TO KNOW BEFORE SOLVING :-

$Hypotenuse = \sqrt{Base^2 + Perpendicular^2}$ .
$Perpendicular = \sqrt{Hypotenuse^2 - Base^2}$

SOLUTION :-

In the triangle on the right side ,

$Perpendicular = \sqrt{26^2 - 10^2} = \sqrt{676 - 100} = \sqrt{576} = 24m$

⇒ Perpendicular of the triangle on right side = Perpendicular of the triangle on left side.

In the triangle on the left side ,

$Hypotenuse = \sqrt{24^2 + 18^2} = \sqrt{576 + 324} = \sqrt{900} = 30m$

∴ x = 30m

3 0

3 years ago