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3 years ago

Help me pls and explain

Mathematics

1 answer:

hammer [34]3 years ago

3 0

Answer:

14. x = 1

16. x = 4

18. x = 10

Step-by-step explanation:

14. We have ∠ HGF = ∠ HGP + ∠ PGF

Given, ∠ HGF = 177x + 1, ∠HGP = 1 + 99x and ∠ PGF = 78°

So, 177x + 1 = 1 + 99x + 78

⇒ 78x = 78

⇒ x = 1 (Answer)

16. We have ∠ BCD = ∠ BCK + ∠ KCD

Given that, ∠ BCK = 9x - 2, ∠ BCD = 174° and ∠ KCD = 34x + 4

So, 174 = 9x - 2 + 34x + 4 = 43 x + 2

⇒ 43x = 172

⇒ x = 4 (Answer)

18. We have ∠ IJK = ∠ IJR + ∠ RJK

Now, given that, ∠ RJK = 8x + 10, ∠ IJR = 5x +8 and ∠ IJK = 148°

So, 148 = 5x + 8 + 8x + 10 =13x + 18

⇒ 13x = 130

⇒ x = 10 (Answer)

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Compare adding unlike fractions and adding like fractions

muminat

Answer:

We just add numerators and rewrite denominator.

Adding unlike dominators:

We need to find the same denominators. You need to find the least common multiple (LCM) of the two denominators.

Step-by-step explanation:

You mean unlike denominators and like denominators.

Adding like dominators: We just add numerators and rewrite denominator :

Example : $\frac{1}{4} +\frac{2}{4}=\frac{1+2}{4} =\frac{3}{4}$

Adding unlike dominators:

We need to find the same denominators. You need to find the least common multiple (LCM) of the two denominators.

For example :

$\frac{1}{5}+\frac{3}{4}$

LCM for 5 and 4 is 20 : Now, divide by 5 and multiply by 1 for first fraction. 20 divide by 4 and multiply by 3 :

$\frac{1*4}{20} +\frac{3*5}{20}=\frac{4}{20} +\frac{15}{20}=\frac{19}{20}$

4 0

3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=%5Cfrac%7Br%7D%7B6%7D%20%3D%208" id="TexFormula1" title="\frac{r}{6} = 8" alt="\frac{r}{6} = 8

kirill115 [55]

The answer is 48, hope that helps

3 0

2 years ago

Read 2 more answers

32 1/8% as a fraction in simplest form.

Ghella [55]

32's 1/8 = 32/8 = 4
This is the simplest form

8 0

3 years ago

Read 2 more answers

What error did anna make?

Lapatulllka [165]

Answer:

The last option

Step-by-step explanation:

she did not change the sign of +6 to -6

the constant term should be -15 and not -3

6 0

3 years ago

Does anyone know the answer?

Alex787 [66]

Answer:

£0.60

Step-by-step explanation:

If each pack costs £1.59 and Nadia orders 15 packs,

then the total order before discount = 1.59 x 15 = £23.85

From the table given, we can see that for an order of £23.85 a 2.5% discount will be applied.

Divide £23.85 by 100 to get 1%: £23.85 ÷ 100 = £0.2385

Now multiply by 2.5 to get 2.5%: £0.2385 × 2.5 = £0.59625 = £0.60

Alternatively, the calculation in one expression is:

(1.59 × 15) × 0.025 = 0.59625

7 0

2 years ago

Help me pls and explain​

Help me pls and explain