1) -9 +-8= _
2) 7/8=21/
3)algebraic expressions to represent 'ten times a number increased by 10'is _

Open in App

Solution

$(1) . (- 9) + (- 8) = - 17 (2) . \frac{7}{8} = \frac{21}{24} (3) . Let the unknown number = x Now, required expression is, 10 x + 10$

Suggest Corrections

Similar questions

Q. Are the following expressions polynomials?

(1) 21 − 8a + a²
(2) n³ − 6n² + 13
(3)

8 x^{2} - x^{\frac{7}{2}}

(4)

\frac{- 13}{9}

(5)

n - \frac{1}{n}

(6)

\frac{2}{5} a^{3} - 7 a + 19

(7) 51
(8) 9 − 5b² + b⁴
(9)

12 + \frac{10}{p^{- 2}}

Q. Express the number :

8 \times 10^{5} + 7 \times 10^{4} + 5 \times 10^{3} + 4 \times 10^{2} + 6 \times 10^{1} + 9 \times 10^{0}

Q. Observer the pattern followed by the numbers and get the general expressions for representing a two-digit number.

Tens Place	Ones Place	Number Formed	Expanded form of the Numbers
$1$	$5$	$15$	$15 = 10 \times 1 + 1 \times 5$
$2$	$7$
$3$	$5$
$7$	$5$
$8$	$2$
$3$	$7$
$7$	$4$

Q. Simplify and express in exponential form :

\frac{(9^{3})^{2} \times 7^{4}}{3^{8} \times 21}

Question 4

The expanded form of the number 9578 is
(A) 9 × 10000 + 5 × 1000 + 7 × 10 + 8 × 1
(B) 9 × 1000 + 5 × 100 + 7 × 10 + 8 × 1
(C) 9 × 1000 + 57 × 10 + 8 × 1
(D) 9 × 100 + 5 × 100 + 7 × 10 + 8 × 1

Join BYJU'S Learning Program

1) -9 +-8= _____ 2) 7/8=21/__ 3)algebraic expressions to represent 'ten times a number increased by 10'is ___

1.-9 + -8 = -172. 78 = 21243.Let the unknown number = xNow, required expression is, 10x + 10

1) -9 +-8= _
2) 7/8=21/
3)algebraic expressions to represent 'ten times a number increased by 10'is _

$(1) . (- 9) + (- 8) = - 17 (2) . \frac{7}{8} = \frac{21}{24} (3) . Let the unknown number = x Now, required expression is, 10 x + 10$